Bad Bad Bad Bad Service Absa Credit Card & Credit Information department

Absa card is failing to address an issue regarding adverse information placed on their internal bureau enquiry, I had a credit card which they say in Oct 2019 did not receive its instalment, the card was closed in Jan 2020 then in October 2020 9/10months later they report that I had an arrear for month of October 2020 on a card that is already closed, how can a closed profile incur an arrear for October whilst its closed in Jan? If the payment wasn't received for Oct 2019 place the record for the corresponding date not the nonsensical record they loaded which is not factual.