ADDING LISING AFTER ACCOUNT WAS PAID.

my husband had an account with mtn that he has paid ever since I've known him for the past 5 years. last year may, the attorneys who handled the account, VVM attorneys, informed us that the account is paid up, and provided a letter stating this. We app**** for credit, just after that, which was granted from the bank, which means there was no adverse listings on his name, otherwise the bank would have denied his credit. Now, 8 months later, when he applies for credit again from the same bank they say they cannot assist us because there has been a listing against his name( which must have been added within the past 8 months) and when we phoned Compu scan credit bureau they told him that this listing was from mtn. This is totally unacceptable, since this debt is settled, why would you go and add a listing on someone's name if the debt has already been settled? this is affecting his credit score, and his work, since there are quite a few credit checks done by some of his clients in order for him to gain access to their premises for the security services that he provides. I expect this to be resolved within 24 hours as this is totally unprofessional and im sure *******. regards