USELESS!!!!

I have moved may main account to Discovery due to the poor service I received from FNB. I still have a credit card that I need to settle. I am trying to pay my outstanding money into the credit card from Discovery. The account number on the Statement is different to the account number on the app. The consultant who phoned me to settle the arrears amount gave me another DIFFERENT account number for the account. Now I am sitting with THREE different account numbers. When I try to confirm which one to use on the secure message the consultant on there cannot access my details. I am trying to PAY THE DAMN account, my OWN account.

I cannot understand how a bank can be so useless in getting their own money back.