HDFC Bank — hdfc credit card - not refunding the excess amount paid by mistake

Hdfc credit card service request number : tw[protected]
Customer type : resident indian
Customer name : gaurav srivastava
Address : flat no. 308, tower 6, paras seasons, sector 168, noida., er. [protected]@gmail.com
Country : india
City : noida
Mobile no. : [protected]
Email id : er. [protected]@gmail.com
Product about which complaint / feedback : credit cards
Other product about which complaint / feedback : an enclosed complaint has been made for more than 2 months. And no one from hdfc is giving the solution. They are not giving our money back, past 2 months keeping with them and no revert for the same. Enclosed details for your kind action on priority. My family is in need and the bank is fooling us. Kindly take an immediate action for the same.
Is this transaction done by you? : yes
Your complaint / feedback (S) : need money refund and its not happening, need full money and they are not giving since 2 months hence liable for interest as well.
Are you hdfc bank's customer? : yes
Authorized to call/sms : authorized
Relation with bank : credit card holder
Account / credit card / loan account no. : 4893xxxxxxx9206
Branch name : delhi