HDFC Bank — Neither let me pay the credit card bill, nor deducted by bank

Hello there, on 1st june 2020 i had 75000rs in my account and at that time my due was
74542rs but neither it deduct by bank nor you able to make me payment (due to account was on hold). Instead of this i was being charged for June and Jully interest, even after having sufficient money in my account befor due date.
Right now i have 9096rs as remaining due, it's nothing but interest that you charged me for month from June.
Already 760rs is deducted and 9150rs on hold. I want to take legal action against this bank and i have all proofs, i want to go fot further actions.

Mob no - [protected]
Credit card no -5459xxxxx