bad custumer service and incorrect billing

Standard bank card rehab is a nightmare, I have been receiving irritating phone call stating that my account is in arrears in fact is not. firstly they debited my cheque account and paid it into the wrong account. I complaint about it and reassured me that it was resolve and I had to pay R400 now I get five calls per day telling me that my account is in arrears for R455. this is totally irritating and unprofessional.