No response from Vodacom

I dont even want to select a star. In 2020 I paid my Vodacom account of in full on wich they blacklisted me 2020 February the said our name will be cleared and sent a letter to say it is done. When we bought our house the credit bureau still picked up the arears account from vodacom. We spoke to vodacom and they said it will take 5 to 7 working days and it has been more than that and still no response, now what? On their side it shows everything is paid of, by they handed the account over!!!