FAQ
A. You can browse the site or use our search engine to find your desired products. You can then add them to your shopping bag and click on place order. You let us know your address, select a delivery time – and voila, you are done. A Chaldal representative will then deliver your order right to your home or office.
Q. How can I contact you?A. You can always call 16710 or mail us at support@kostokomai.com.
Waseem (Founder & CEO)
Before kostokomai, Waseem worked at Sigfig, a Silicon Valley financial technology startup. At Sigfig, he led the development of a web-based portfolio management software. He designed algorithms to monitor over $100 billion in brokerage assets held by retail investors. He aspires to change the culture in Bangladesh so that people value investment in bold ideas and are more accepting of new technology. Waseem graduated from the Wharton School, the University of Pennsylvania with a degree in Finance and Entrepreneurship.
Zia (Founder & COO)
Zia brings in experience from the field of management and marketing. Prior to kostokomai, he was the Head of Operations at a ready-made garments factory in Bangladesh. He managed over 1000 employees and oversaw all facets of the business including merchandising, production, commercial design, and marketing. Zia has an autistic brother, and he hopes to provide proper care and education to all autistic children. He also believes that a university degree is no measure of a person’s merit. Zia holds a BBA in Marketing from North South University.
Tejas (Founder & CTO)
Tejas is a full-stack engineer. Prior to kostokomai, he worked at Sigfig where he was in charge of tech infrastructure. His hobby includes research on Lisp machines and how we can develop better software. Tejas has a degree in Computer Science from the National University of Singapore. He invites you to read more about kostokomai Engineering.
We are a team of dedicated people spread across the globe and working round the clock to bring about rapid progress in the Bangladeshi E-commerce ecosystem.
Mobarok Hossen
Software Engineer
Nice E-commerce
Mobarok Hossen 2
Software Engineer
Nice E-commerce
M.sajib
Jr. Software Engineer
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At kostokomai, you are more than your job title, you are part of one of the fastest growing e-commerce in Bangladesh, a successful, purpose-led business. Work with a team that works to improve the lives of our consumers and the communities around us. If you want to feel proud of what you do, join us.
Click here to learn more about our engineering team and the work we do behind the scenes.







Feel free to contact us anytime at 16710.
Or if you prefer, you can drop us a note using the form below. You'll always get a response from a real person — with a real name — within 48 hours.
Contact Us
When you use our Website, we collect and store your personal information which is provided by you from time to time. Our primary goal in doing so is to provide you a safe, efficient, smooth and customized experience. This allows us to provide services and features that most likely meet your needs, and to customize our website to make your experience safer and easier. More importantly, while doing so, we collect personal information from you that we consider necessary for achieving this purpose.
Below are some of the ways in which we collect and store your information:
- We receive and store any information you enter on our website or give us in any other way. We use the information that you provide for such purposes as responding to your requests, customizing future shopping for you, improving our stores, and communicating with you.
- We also store certain types of information whenever you interact with us. For example, like many websites, we use "cookies," and we obtain certain types of information when your web browser accesses kostokomai.com or advertisements and other content served by or on behalf of kostokomai.com on other websites.
- When signing up via Facebook, we collect your Name and Email (provided by Facebook) as part of your kostokomai account Information.
- To help us make e-mails more useful and interesting, we often receive a confirmation when you open e-mail from kostokomai if your computer supports such capabilities.
Changes To Your Information:
The information you provide us isn’t set in stone. You may review, update, correct or delete the personal information in your profile at any time.
- If you would like us to remove your information from our records, please create a request at the Contact Us page.
- To Delete your Facebook login, visit the Contact Us page while logged in via Facebook. You should see a "Delete Facebook Login" option to create a request to remove Facebook login from your account.
Information about our customers is an important part of our business, and we are not in the business of selling it to others.
For Chalao Driver app privacy policy, please refer to this document.
1.1 Welcome to kostokomai.com. kostokomai Limited (“kostokomai”) provides access to the kostokomai.com website or the mobile application/app or any other media ("Website") to you subject to the terms and conditions (“Terms”) set out on this page. By using the Website, you, a registered or guest user in terms of the eligibility criteria set out herein (“User”) agree to be bound by the Terms. Please read them carefully as your continued usage of the Website, you signify your agreement to be bound by these Terms. If you do not want to be bound by the Terms, you must not subscribe to or use the Website or our services.
1.9 The agreement with kostokomai can be terminated by (i) not accessing the Website; or (ii) closing Your Account, if such an option has been made available to You.
1.10 Notwithstanding the foregoing, these provisions set out in these Terms which by their very nature survive are meant to survive termination, shall survive the termination/expiry of this agreement.
2. Eligibility
2.1 Use of the Website is available only to such persons who can legally contract under the Contract Act, 1872.
2.3 By accepting the Terms or using or transacting on the Website, the User irrevocably declares and undertakes that he/she is of legal age i.e. 18 years or older, and capable of entering into a binding contract and such usage shall be deemed to form a contract between the Website and such User to the extent permissible under applicable laws.
3. Communication
4. Your Account and Responsibilities
4.1 Any person may access the Website either by registering to the Website or using the Website as a guest. However, a guest user may not have access to all sections of the Website including certain benefits/promotional offers, which shall be reserved only for the purpose of registered Users, and which may change from time to time at the sole discretion of the Website.
4.5 kostokomai as a platform does not support or encourage multiple accounts owned by a single user even with different mobile numbers & reserves the right to restrict, deactivate or disable any account that might fall under any sort of abuse of the service.
5. Charges
6. Copyright
7. Cookies
8.2 Any short-term or long-term promotional activity or offer(s) are by default valid for a single order within the offered time frame under any specific account on kostokomai.com. Any repetitive or suspicious or abusive practice during any offer or promotion might result from a canceled order & kostokomai reserves the right to do so to protect the rights & benefits of other users. An account that tends to abuse any offer by any means on the platform can also get terminated to maintain hygiene factors on the platform. The automated abuse detection technology that kostokomai has can be also enforced at any time without any sort of prior notice.
8.3 Discount code(s) offered to any/all segment of the customer(s) through different marketing channels might get disabled or extended by the authority at any time without any prior notice. The modality can also be changed to accommodate with price changes or fluctuation & intense uses of the same by the user base to protect against any sort of abuse or suspective uses.
9. The Contract
9.1 Your order is an offer to us to buy the product(s) in your order. When you place an order to purchase a product from us, you will receive an e-mail and/or SMS to your mobile phone number confirming receipt of your order and/or containing the details of your order (the "Order Confirmation E-mail and/or SMS"). The Order Confirmation E-mail and/or SMS is an acknowledgment that we have received your order, but does not confirm acceptance of your offer to buy the product(s) ordered; when we send the Order Confirmation E-mail and/or SMS a contract called an “agreement to sell” is concluded in accordance with Section 4(3) of the Sale of Goods Act, 1930 i.e. the transfer of the property in the goods is to take place at a future time when the product(s) is/are delivered to your designated address. We only accept your offer, and the above “agreement to sell” becomes a contract of sale for the product(s) ordered by you in accordance with Section 4(4) of the Sale of Goods Act, 1930, when the product(s) is/are delivered to your designated address and at that time the property in the goods is transferred from us to you.
9.3 Please note that we sell products only in quantities that correspond to the typical needs of an average household. This applies both to the number of products ordered within a single order and the placing of several orders for the same product where the individual orders comprise a quantity typical for a normal household.
10. Product Descriptions
11. Pricing
11.2 Despite our best efforts, a small number of the items in our catalog may be mispriced. If the MRP of an item sold by kostokomai is higher than our stated price, we will, at our discretion, either contact you for instructions before shipping or cancel your order and notify you of such cancellation. And if the stated price on the product is lower than kostokomai, we will, either refund the amount or replace the product according to your preference, when acknowledged.
12. Return Policy
For perishable products such as milk, fruits, and fresh vegetables, we have a one (1) day return policy.
We are continuously monitoring accounts of customers with excessive requests for returns and refunds. We take the necessary steps to prevent this.
12.2 A user may return any unopened or defective up to 10% and less, item within 7 days of receiving the item. But following products may not be eligible for return or replacement:
b) Damages due to misuse of the product
c) Incidental damage due to malfunctioning product
d) Any consumable item which has been used/installed
e) Products with tampered or missing serial/UPC numbers
f) Any damage/defect which is not covered under the manufacturer's warranty
g) Any product that is returned without all original packaging and accessories, including the box, manufacturer's packaging if any, and all other items originally included with the product/s delivered.
13.1 kostokomai tries its best to serve the users. But if under any circumstances, we fail to fulfill our commitment or to provide the service, we will notify you within 24 hours via phone/ text/ email. If the service, that kostokomai fails to complete, requires any refund, it is done maximum within 7 Days after our acknowledgment.
13.2 Refund requests will be processed under mentioned situation:
- Unable to serve with any product.
- Customer returns any product from a paid order.
- Customer cancels a paid order before it has been dispatched.
For all the above three scenarios, the refund amount will be sent to the kostokomai Balance of the customer. And the balance can only be used to purchase at kostokomai. Upon the customer's request, kostokomai will transfer the refund amount to the user's original payment source within 7 days. Refund is only allowed for customers who have paid via bKash or card or other electronic methods. For the orders that are paid via Cash, a refund is only to be given through kostokomai Credits.
14. Supply Policy:
14.1 kostokomai, itself does not produce or manufacture any product, therefore kostokomai tries to control the quality, but does not give quality assurance for any. We believe the manufacturer/ vendor/ supplier is fully capable of assuring the quality of every product.
15. Modifications
15.1 kostokomai reserves the right to modify these Terms and Conditions. Such modifications shall be effective immediately upon posting on kostokomai.com. You are responsible for the reviewing such modifications. Your continued access or use of kostokomai.com shall be deemed your acceptance of the modified terms and conditions.
16.1 Use of the kostokomai Software/Application/App: You may use kostokomai Software/ Application/ App solely for purposes of enabling you to use and enjoy the services as provided by kostokomai, and as permitted by these Terms. You may not incorporate any portion of the kostokomai Software / Application/ App into your own programs or compile any portion of it in combination with your own programs, transfer it for use with another service, or sell, rent, lease, lend, loan, distribute or sub-license the kostokomai Software / Application/ App or otherwise assign any rights to the kostokomai Software / Application/ App in whole or in part. You may not use the kostokomai Software / Application/ App for any illegal purpose. We may cease providing any kostokomai Software / Application/ App and we may terminate your right to use any kostokomai Software / Application/ App at any time. Your rights to use the kostokomai Software / Application/ App will automatically terminate without notice from us if you fail to comply with any of these Terms. All software used in any kostokomai Service is the property of kostokomai and/or its affiliates or its software suppliers and protected by the laws of Bangladesh including but not limited to any other applicable copyright laws.
17. Deleting your kostokomai Account
17.1 Customers may terminate their use of kostokomai by deleting the account from the kostokomai App from their used device at all times.
17.2 Your kostokomai account may only be deleted if any of the following conditions are fulfilled and if you have reached a consensus with kostokomai in respect of:
a) No overdue payments, pending payments, or remaining balance.
b) No ongoing orders
17.3 kostokomai reserves the right to suspend Customer’s membership or remove Customer permanently in cases where any violation of the Terms, applicable laws or good faith/moral rules by Customer is determined.
17.5 When the account deletion procedure is completed (i.e.the retention period ends) all related contractual relationships between the Customer and kostokomai will be terminated. The consequences of account deletion include but are not limited to the following:
b) The Customer will not be able to perform any operations that require account access.
c) The Customer will not be able to retrieve the personal information, transaction records and historical information under the account.
17.6 kostokomai will delete your data and immediately stop collecting, storing, and using your personal information and other data, except as otherwise required by applicable laws and regulations or industry standards. For example, kostokomai will retain corresponding invoice data for tax compliance purposes, and keep the transaction information between you and kostokomai to comply with relevant e-commerce laws.




