ICICIcredit Card — Reversal of Charges & Closure of Account

This is with regards to my ICICI Credit Card, the Bank is sending me Statement Every Month for the Late Payment Fess, Interest & Service Tax. I have made all my payments on time still they have charged me the late payment charges and whenever I have called their customer care for this they informed that they will waived the charges in next statement. But they have not waived the charges till date. I have cancelled the card long back. Several times I have called up their Customer Care to resolve the issue but it was a pathetic experience to talk with them. I have sent letter through Fax and Registered AD to their Consumer Cell Head at Hyderabad & Mumbai Office but no feed back from them. Still I am receiving the statements from them and now they are harassing to pay the charges.