Vodacom not updating account details on credit bureau

I am not happy with vodacom, I had a contract with them which was handed over to their lawyers. I completed the payment in July 2020 received a paid up letter from the lawyers. Vodacom consultant told me that the account will be updated and cleared on credit bureou within 21 days which has not happened until today 29 September 2020,the account is blocking me from getting any credit as it still appears as if I am still owing them when I am not and MA being seen as a bad payer on my credit report.