pathetic service at Vodacom

I have been trying to cancel my vodacom contracts for the last 3 months now, every time I phone them I give them the names,times and amounts of times I have phoned,I asked them to go and pul the conversation recordings of all those days which I have phoned and to tell me why instead off canceling they went and upgraded my contract without my consent. After jet another month they finally reversed the upgrade but never paid me back my money and now we are almost at the end of Feb and still no cancelation.this service is really pathetic and I would not recommend vodacom to anyone.