NO SERVICE NO REFUND

I stopped one of my contracts already in June month for July so that was the last time i was suppose to pay, after that i phoned again and still no contract were stopped so i put in another request to stop it. so July came and still not stopped then August they charged me for DATA over the R200 that i did not even buy cause according to me the contract must be stopped already, so I phoned again and asked to stopped it again and they said they would request for an immediate stop of the contract and a refund, I phoned again a week later that is now almost the 5th time I phone them and the person told me they are still busy with it. I phoned again the 6th time and then the person told me the contract is stopped and i will get the refund last week, so i phoned this week again cause NO REFUND STILL, just to find out the contract is not stopped and that another supervisor will call me (that never happens by the way) so i will have to pay another month plus the data they charge me for!!!!! VODACOM IS PATHETIC !!!!!!