As per
Master Direction – Credit Card and Debit Card – Issuance and Conduct Directions, 2022 - the authoritative document on the matter states:
8. Closure of Credit Card
(a)
Any request for closure of a credit card shall be honoured within seven working days by the credit card-issuer, subject to payment of all dues by the cardholder. Subsequent to the closure of credit card, the cardholder shall be immediately notified about the closure through email, SMS, etc. Cardholders shall be provided option to submit request for closure of credit card account through multiple channels such as helpline, dedicated e-mail-id, Interactive Voice Response (IVR), prominently visible link on the website, internet banking, mobile-app or any other mode. The card-issuer shall not insist on sending a closure request through post or any other means which may result in the delay of receipt of the request.
Failure on the part of the card-issuers to complete the process of closure within seven working days shall result in a penalty of ₹500 per day of delay payable to the customer, till the closure of the account provided there is no outstanding in the account.
As per it, they should have honoured the first/original closure request raised by you within 7 working days, after that they owe you penal money as per RBI.
Since you referred in the first post the ticket has been open for 2 weeks, I am doing a rough calculation of Rs.500*6 (excluding holidays) = Rs.3000.
Members, please correct me if I am wrong, if I am right, you deserve this, get it, and set a precedent for those b*tards.