[Resolved]  ICICI Bank — Credit card payment charges

I hold an ICICI credit card. I used it make a transaction of Rs 4838 in January 2009. A few days before the due date of payment, someone from the bank has called me up, as a reminder for the payment, and I was told that, I can opt for a collection agent to pay the amount. When asked if there will be any charges for that, she said 'No'. I had made the payment to the collection agent within the due date. But, my next bill statement showed a cash payment charges of Rs 100. I had called up the customer care requesting for reversal which was declined. Hence, I asked them to cancel my card, which they have done.
While I am still fighting for the first late payment charges, the bank is sending me a new statement every month and the amount was some thing like Rs 230 till my previous bill. It suddenly got increased to Rs.2038 in the latest bill.
I feel its extremely high and not reasonable to pay such high amount for some thing like transaction charges in spite of making payment within the due date.
The bank representatives are now calling me up several times a day and harassing me for payment, in my working hours.

Please help!!

Thanks,
Suman