REFUSING TO HELP FIX THEIR MISTAKES

I upgraded in December, after being told I had to stay with 200 top up, the woman made a mistake and it took 2 hours and they had to call it in. 2 days later all my money dissapeared from my phone and I got only prorate 100 topup. This has kept happening with the 100 topup, meanwhile I have been paying the correct amounts as the statements requires. After the initial money dissapearing and only part of my contract being fulfulled I went back to the store in Robertson and was told the store cannot do anything and I cannot cancel my contract. They could only put in a request after I went back 2 more times that day. My sister compained on the internet and I got called. Neither that nor any of my email has resulted in anything being fixed. On one of my emails they rep**** that I should pay them over R9000 to cancel my contract. I just got of the phone with somebody that was a broken record. store store store. I went to Robertson because Potchefstroom was giving me bad service and onlybecause I was afraid changing providers would be even more trouble. Nobody appears able to help or know who can help.