Paid up account

I had an overdue account with capfin which was handed over for collection. I paid up the account and got the paid up letter then i emailed to capfin they confirmed that they had received it and would forward it to the credit bureau to update my profile. It's almost two months now and the account status on my report still shows active and in arrears. When I called the call centre I was told there's no way to check if the letter was forwarded to the credit bureau. I can't apply for credit because of that account. The other institutions were able to forward my my paid up letters to the credit bureau and the information was updated in just 7 days. PLEASE GET THIS FIXED. and please update all major credit bureau companies