Standard Chartered Bank — Fraudulent Credit Card Service by Standard Chartered Bank

Hello, Few months back I've got a call from Bajaj Finserv Lending for a credit card service with Standard Chartered Bank. They have issued me Standard Chartered Platinum Credit Card. I have done shopping just once from that credit card and have got a bill wherein unnecessary charges were applied in my bill. So, I've made a minimum due amount before a due date but later on I've deposited the cheque in favor of My Credit Card Payment but the bank have misplaced my cheque & no communication has been given to me about my detailed bill / payments. After few days of the payment I've got msg from Standard Chartered Bank saying my bill amount is pending. Since that day only I had been calling to the customer care no, of the bank no body is responding to my calls. I've also written a mail to them about this complete issue & have requested to cancel my credit card (Complaint Ref No. - Ref : 08/13/104828/SP/CRD) & have got a mail-reply that my request will be processed in 7 days but no response has been received from them till now & still no one answers the call at customer care no. I am not getting any clear status about my bill payments & credit card cancellation request. So, I would like file a complaint against this fraudulent bank & would also request to take strict action against the bank & help me with a positive outcome.