Failure to allocate payment

Capitec debited my investec account on 27 October for the capitec credit card monthly payment but they still have not allocated the payment on the credit card. Instead i get messages about not honouring my monthly repayments. This has been going on since March and everytime I have to be the one call them alerting them about their failure to allocate payment and check that they don’t charge me for arrears. Why can’t you fix your system to recognise and allocate debit orders from investec!!!!! I’m tired of lodging complains and having to wait for the 5 business days turnaround.