People do not do their jobs properly, and we in turn pay for it

On 10 November I called the bank to close my overdraft and revolving credit loan, consultant confirmed all was done and tbe RCP will take a few days to be removed from my banking app. 1 December, the installment for the RCP was deducted from my current account, even though the account was closed. I called the bank immediately, only to be told it is not closed! Was told it will be sorted out. I see on the account that account was closed on 1 December, and interest was deducted as well, on an account with a R0 balance, interest was still taken. I called the bank now asking when tbe full refund will be made, get put though from one person to the next, and still have no answer!