Standard Bank *****ing the little people

So I just received a phone call from Standard Bank Credit Card division. I missed a payment. Fine I understand that and that you want to deduct the outstanding balance. Fine that's great. Firstly when I try and make an EFT it does not work. Oky, now the lady tells me because I missed one payment you are going to put me on as a slow payer BULL****!!! Then she goes on to tell me that my card has been revoked in 2019 already and that the person handling my account did not do their job as to put me on a fixed amount and that she is going to do that now, fine I understand that. But here is my problem with this whole thing. If my card was revoked in 2019 why the hell is there still interest being put on the outstanding balance?????? So in actual fact you are suppose to go back to the date that this all happened, write back alllllll the penalties, take the money I have paid and put that against the amount outstanding... *** are you doing Standard Bank? OOOO and also if I miss a payment again I will be liable for the entire outstanding amount???? Seriously? Also you can go ahead and contact me because I really want to discuss this with you over the phone and no agent a manager would be great!! Thanks