Unhappy Client

I went to standard bank Westgate branch to settle and close my credit account,they gave me a phone to speak to the credit department because they don't close credit cards accounts at the branch.i was told to pay R600 to close the account I did just that and the lady who help me on the phone said I have an outstanding balance of 30 something rands that I need to pay in order for them to close the account.....which I made a deposit of R50 the next day,now I'm receiving statements that my account is still open and I have to make a payment.Standard bank is a ****.i will never bank with them ever gain.