Take away my credit, Overcharge me

So i have an MTN account. <br> <br> Over the last 8 months i have racked up R1000 in airtime that i have not used. Last month my account was cut off and it took 2 weeks to get it back on. When it came back online my account had 0 airtime on. So this month has come. Still have not received my monthly airtime and got billed R700 extra which was debited off my account. Ive been to the MTN shop to the lady who i know for years who open my account specifically that it had a limit on the data and the airtime. She laughed at me and told me straight that MTN is doing this to everyone and I must just keep irritating them otherwise i wont get my money back. WHAT A JOKE. 1stly You shut down cause of bad staff. I lost R1000's because i was unable to receive calls. Then you want to start robbing people for the money that you have lost in the process. I have done some reading up and this is not the 1st time you have done this MTN. You are a *****, this is my 3rd contract with MTN and i will not be making it a 4th. This is pathetic. As i can see on hellopeter that you are truely ****. Robbing people blind and you do it from a unstoppable debit order.<br> <br> SHAME ON YOU