Vodacom is terrible at resolving customer issues but very good at taking customer money

I wrote a review for Vodacom on the 16th of August to which Vodacom rep****. I had an issue with Vodacom giving me bad credit for a contract I cancelled on time (and after numerous attempts of cancelling over 2 years) but they had been forcefully keeping me on the contract. When they called me the service assistant sent me my account balance which indicated that I do not not owe Vodacom. The solution provided does not work. The statement they sent to me stating that I don't owe Vodacom is not enough to clear my name. I had also requested that the individual calling must send me a letter stating that I do not owe Vodacom any money and they never did. I am still waiting to this day. That letter is the only thing I can use to clear my name because Vodacom has put my name up for bad credit for no reason at all. I am still very dissatisfied and livid because I am stuck with unnecessary bad credit because Vodacom did not do their job properly!!