The worst services from vodacom

I have tried to cancel my vodacom insurance for about to months now. When I opened my contract I was told that I would get 3 months free cover but I was charged from the get go and every month the agent would say I would be contacted or my account would be credited and I have not received any of the above. Now I wish to cancel my insurance a email was sent to request the cancelation and still nothing. It's so sad that they all helpful when they want you to take out a contract with them but there after you left on your own. I wouldn't recommend any one else do any one else get into a contract with vodacom