HDFC Bank — credit card settlement

Address:

New Delhi, Delhi, 110025

I wanted to settle down my credit card, i am trying to reach-out to customer care but no response. i want this to be done on priority basis. kindly help me with this. as there are so amny hidden charges with the bank. and now when i am trying to get it cleared, no response from the bank side, i wanted this to clear this asap without delay. kindly help me with this.
if i am not getting any solution i wont be responsible and bank will only be responsible for this.