WORST CUSTOMER SERVICE

Vodacom does not even deserve a star. They claim, I upgraded a contract in 2019 of which I denied the claim. I have been requesting evidence of the claim since last year May. Not a single person from Vodacom has been able to assist me. I have told them if it turns out that they are correct, I will gladly apologize and continue to pay till the contract expires. What kind of a company that does not have a separate complaints line? 132 is customer services, they expect us to lodge a complaint with the same department that does not deliver on it's promises? The agents don't even want to transfer calls to their line managers and don't even know the CEO's name. Why is it acceptable for them take my money every month yet can't resolve this issue?