HDFC Bank — cancellation of credit card

Address: 560097

Website: Credit Card

My credit card with hdfc bank is premea. No. [protected]
I have been using it over a decade.
I have some complaints like authorizing some payments without my consent.
I was bringing this to their notice regularly.
How ever i have decided to cancel the card and settle the account once for all.
Please let me know the final amount due and time for repayment.