Incorrect billing

Good day All

I have logged a call with vodacom on the 7/09%2021 at 8:25 am. They have sent me a ref number SR*** and advised that it will be resolved within 7 to 14 working days. This has passed the timeframe and i had not a single call from vodacom. My query was being over billed which has already gone off on my account. The service from vodacom is very poor so if you are thinking of taking up a contract or anything from vodacom note that they cannot keep to what they say.