vodacom have bad customer service

I had a data contract with Vodacom in December 2023 I canceled the contract called and only wanted to sell me another package. called the next day and said I don't want another contract I want this canceled after the call they said it's done. I have upgraded my cell phone contract and asked at the branch they said it's canceled at the end of the month they debited my the data package with the cell phones i tried to call them again but could not get hold of them me and another caller end up talking to each other. I reversed my money I refuse to pay for something I canceled. My cell phone contracts both should get 10gig data 1 got 20gig and the other did not both tablets needed to get a sim card got only for 1 tablet Vodacom lost me as a customer will advise to make that a customer can do everything at their Vodacom branch my experience is with a call centre there is always a issue