Remove the bad debt from my name I have paid

I am truly dissapointed, I had a credit card with Nedbank and they handed me over to attorneys to pay and I have settled the credit card but now they have not removed the flag from my credit profile and I am trying to buy a house, I have the paid up letter and everything and I dont have time to wait 3months for uploading the letter to transition and experian the property is available now, I need help Nedbank please rectify this please my name is Dillon Lottering please contact me on +***5 urgently