worthless service

I was once a client of African bank. I paid my account if full and closed the account. following I received a paid-up document from them. then today I get debited by them when I called my bank I was advised that there had been other debits from them including this one so I call African bank to query to be told by Lucy Mashiyane that she cannot help me with my debit I have to go into the branch cause my account is closed due to fica I have not been a customer with them for a long time and I must now be inconvenienced by them and they can't even tell me anything about why they debited me