Bad Service and *****

Guys I need help I had a problem with Standard bank when there was some some companies which always debited my account for a lot of amounts below R100.00. I took this up with standard bank to cancel but they couldn't help me advising that the companies were using different ref numbers so it was difficult for them. My Account was always on a negative balance and I would never enjoy My Salary because there was a time where the amount was just too high. Still They couldn't help me. I went to Standard bank in Kagiso a lot of times regarding this. They didn't help. I then asked them to change my account number by deactivating the then current one and open a new one but still they didnt. They we're telling me to Pay the amount which I cannot remember now. Then I just left them and started using Nedbank. Now lately they are sending me emails that I am owing them R5349.45. I called them and a lady who answered the phone told me that my account is with MacRobert Inc, I then called MacRobert Inc and I spoke to Edwin who then said my account has been recalled by the bank. I need assistance with this whole **** please someone help