Appalling service

Standard Bank is unbelievably abusive with bullying tendency. Last year on the 6th December 2021 I closedmy credit card with standard bank and received an email that the credid card was closed on the 9th December 2021. Today the 29th of April 2022 I received a call from a consultant telling me the credit card is not closed and there's an amount that is debiting of the account although its closed. I requested the consultant on the phone that I cancelled the account and received confirmation. I asked the consultant why are they allowing payments on closed accounts he could not answer and explained a process that its my responsibility to ensure The consultant refused to listen and told me to pay the money, I refused and asked him to send an email to someone senior and explain why I am refusing as I don't see how they allow payments through a closed account. Before I could finish he spoke over my voice saying I don't listen and there is interest that will continue on the account because I dont listen and dropped the phone in my ear. I refused to be bul**** like this.I stepped into the branch and got told the card is closed. So I don't what is going on.