[Resolved]  State Bank of India — why harassment/ settlement

Sir, I owed a SBI CARD(credit card) bearing number [protected] having valid through 12/07. I paid the last bill( Rs.6450.00) including all fines through sbi cheque bearing no.838214 of dated[protected] clearly writing FCR and told the sbi helpline to close my a/c and also told them to stop transaction.Since then they have not send any closing letter or settlement letter, instead they are harassing me by making several phone calls and send monthly statement sms showing amount due of Rs. 13026.39( last sms). Yesterday one phone call ( [protected]) was received by me telling me that if I pay Rs.1500.00, the person will send a settlement letter to Guwahati. This type of negotiations were made several times via phone call with the so called SBI CARD personnel. Now what to do? Please help me.