Poor customer service.

I have paid my truworths account on the 1st of December 2021 only to find out that the person who processed the payment didn’t do quality checks and it was paid into the old account which was closed long time ago.now my active account is in arrears and I have been explaining to consultants over and over that please note I have made payment and this is not my fault please fix it on your end however no one is willing to help me.went to the mall at reeds truworths and proof of payment has been sent to head office but still the issue is not yet resolved.poor customer service.i want my money to be refunded so that I can close off the account I have with truworths.