Worst customer experience ever by Vodacom

I have experienced the worst service from Vodacom. I had a cellphone contract with vodacom that is paid up, i even received a "settled letter" from Vodacom legal in July already 💔 however under my credit it shows that I still owe Vodacom which is a lie. I have called Vodacom numerous times and even went to a vodacom store, all they tell me is that they can see the "settled letter" but can't do anything they will escalate further. This is making my life so difficult as it is affecting my credit score but all the vodacom consultants that I have spoken to come with different stories and no solution. I am really hurt by this and If vodacom doesn't want me as a customer anymore it's okay but they must fix the mistake they made on their side and close my account so that I can go be a customer elsewhere. The other day I called after calling almost every week and a consultant told me that "you owe vodacom, when do you think you can make a payment" i was shocked that after being promised that my account will be fixed their staff still says I owe💔😢.