Barclay Credit Card — Charging wrong amount on my card

Dear Sir/Madam

I am holding a Barclay credit card from March 08; I have done the transaction many times like booking air ticket etc, & done the payment on time. In the month of September I made the purchase of Rs 1100.00 from big bazaar. I dropped the cheque in their drop box but due to signature difference the cheque bounce back, hence Barclay has charged cheque disorder charge & late fees. In reply I again dropped the cheque of Rs 1800.00 on 03/10/2008 (payment date was 06/10/2008) which was cleared on 11/10/08. In the next statement they charged the late fee, I am asking them through mail & call but they were unable to clear my query & were not responding to mail also. They are now charging late fee every month, but not clearing my query or replying to my mail. Than a new story come in to picture, they started asking me about prority circle charges, I again refuse but they insisited that you have asked the service. Again the call started for payment. Finally spoken to their supervisor & they agree to settle on a sum of 700.00 rupees for this I have to pay the 200.00 first & then barclay will send the statement for clearing the dispute on their committment i paid 200.00 rupees (receipt no. 445796) in the month of Feb 09. Then no call come to me but I call for the statement. Three month they keep quite now again from June they are asking the late fee & amount of 6500.00 as a due payment & no body is justifying the amount every day 5-6 call are coming & asking for payment. I am really fed up & irritated with their behaviour, kindly help. I ahve already blocked my card oct 08 & done no transaction on it.

I request kindly look into as they are cheating me & throughout day they are harassing me by calling for payment instead of clearing my doubt.