Vodacom impacted my credit score negatively due to their mistakes

I was sequestrated in 2013 Vodacom went and put this cellphone contract on ITC and now I struggle to get it removed. They were instructed by the court in 2013 to remove this debt from my name, they did not do that. I cancelled a contract in June 2023, this contract was not stopped as promised and they **** to me, in February 2024 I received a final demand letter I phoned then again and sent them the proof were the account was paid up in June 2023 and cancelled. The contract was eventually cancelled in Feb 2024 but now they added R1903.00 outstanding money to my ITC profile and I must pay for their mistakes. I am trying to buy a vechicle but Vodacom does everthing against the consumer law and hinders everyone credit score and.