Telkom Account - Unable to verify our payment as Account has been closed off

We went into a Telkom store to provide proof of payment so that Telkom can see that the outstanding balance was paid. Unfortunately, they cannot assist in-store and provided us with a number to call ***) to verify the account is at nil balance. We paid up the account on 29 June 2024, sent proof of payment countless times, made countless phone calls, just to get told that they cannot allocate the payment as the account has been closed off?? - how do you close off an account where there is still money owing on it. All we ask is for a Telkom statement reflecting our payment from 29 June 2024, showing nil balance. My concern is that in a few months/years, when this is forgotten, we get black listed for an account that has been paid up - therefore I just want proof of allocation of payment that's all. Just a paid up statement... I do not think this is a difficult ask.