Nedbank Not Fair

I had a Nedbank Credit Card, Which after I phoned for a settlement was told I qualify for a 15% settlement, this was later told to me was a mistake. Anyway I dealt with Natasha Murugas, she told me she would get me a settlement letter. I paid the full outstanding amount directly, after which I phoned to confirm and was told they could see the payment was made. iam however still waiting and have heard nothing. this is not how it should be done. I have kept my end. according to the credit act as soon as you pay the outstanding balance, you should be furnished with a settlement letter, you shouldn't have to wait. you don't wait for a receipt after you pay something. They also need to update the payment at the credit bureaux and show the account is closed asap, and because it was at the recoveries need to remove the listing totally from itc. I paid the account in full and owe nedbank nothing yet they don't play the game, very unfair. Now the waiting game after being messed around with false settlements etc.