MTN A BUNCH A *****S

I Have absolutely had enough of MTN, I initially took out two contracts with MTN both the the value of R340.00 ea fixed a month on the MTN my choice 100, from day one they have been overbilling me, when this was addressed last year November the total amount of over billing to that point amounted to close to R650.00, after NUMEROUS attempts and even physically going to an MTN store where the items were purchased our money was never refunded they told us it would take til January 2015, when January came they \worked"the overbilling into our account for the remainder of the contract and since them have been debiting us R3.00 less a month SO exciting considering how much money I was over billed this R3 meant NOTHING!!! I decided to leave it because they are already so useless and I was getting NOWHERE Now this month they decide to bill me R887.06 WHICH IS R207.06 OVER THE SIGNED CONTRACT AMOUNT!!! I want my contract cancelled with immediate effect for being in bridge of my CONTRACT!!! I CAN'T DEAL WITH THE CALL CENTRE I GET NOWWHERE I HATE MTN """