Paid up account still being debited

The banking industry in South Africa has to be far one of the worst in the world. I paid my credit card up and sent proof of payment in April 2015. on 23 April I decided to contact african bank to confirm this as I never received any notification from them.They confirmed they received the proof of payment but never cancelled the debit order. The fool I dealt with , informed me that the account has been closed and no debit orders will be going off. Well I accepted this kind of incompetencies because when the debit order went off this morning , I was not even in the slightest surprised.What this agent done was , instead of closing my account he changed my debit date .So basically you taking money that is not owed to you and that very same money is going to accumulate interest that your bank is going to benefit from. then I get told I must wait 5 working days to get my back. I want my money back in my account by close of business tomorrow and not in 5 working days. train your staff and get agents who know how to listen to a query before doing their own thing. it's common sense that a debit order should automatically be cancelled once the account is paid up.