BAD customer service

I was called 700 times a day by ABSA to pay my debt, when they removed themselves from my Debt Busters account as I was affected in the beginning of Covid and filled in all the correct form regarding a 3 month grace period. All my accounts accepted it except ABSA. I paid off ALL my accounts, then I paid ABSA off this month.

NO ONE can confirm my payment, NO ONE can send me a paid up letter.

I am no longer with ABSA and will not go to the branch. I have paid off my debt and would like my paid up letter now please.

I have left ABSA many years ago because of bad service and was hoping they will prove me wrong, and they didnt.

Can anyone please assist me as NO ONE ever replies to my emails.