Worst service

I have to keep phoning customer care cancellation department to get contracts cancelled just to find out my bill stays the same the contracts were never changed, i didnt accept any devices. I went to the vodacom store in VallMall they openend my profile and told me to phone the cancellation department. Vodacom is the worst!!!!!! How is it possible that i have to follow up to make sure the person who helped me is doing her/his job.