no Service

I upgraded my phone in December 2014 and changed it with the recommendation from the agent to a MY CHOICE 100 TOP UP package. When I got my phone there was no airtime, I phoned and they said it will only be loaded on the 17th of January which I accepted. After many calls my phone was ok and I could start using it. The first bill came and the debit order took - R1500.00 from my account instead of R348.00. I phoned them and they said I had a open contract which I disputed and told them to listen to the upgrade where I specifically said I DONT want a open contract because my previous one was a top up, a problem was logged and they said it will take 7 days to sort out. The second debit order went of which took - R900, another call was logged, since then it was one problem after the other and until today after many phone calls and reporting the problem on e-mail nothing has been sorted out, no feedback was given after many promises. The upgrade department even told me that NO one has even asked yet to listen to the recordings. I have been struggling now for 6 months with NO results just promises after being a customer for almost 15 years. The original log number is 571041