Vodacom and appallingly bad service

I made a payment of around R10000.00 on the 17th of December 2019, which was the settlement amount for my contract, given by a Vodacom consultant. Thereafter I requested a paid up letter to confirm the payment and for the Vodacom profile to be removed from my ITC. On the 3rd of August 2020 I checked my ITC and Vodacom showed as though I am still in default for my contract. I called again and spoke to a lady by the name of Molobukeng Mashau at around 15:54 and was told a request will be sent for a settlement letter to be sent to me as well as the profile being removed from ITC. I recieved a call today 30th September 2020 from a company saying my account has been handed over and I have an outstanding amount due of around R3000.00. I confirmed the account was settled and the person confirmed I made a payment in December. I called Vodacom immediately and spoke to Audrey who told me that it does not show I am in default and the account is paid up. She stated she will send a request AGAIN for a settlement letter and for the account to be removed from ITC. It has been 9 months since I paid the account and still my credit score is being affected by Vodacom.