months of struggle to get a contract sorted

I have upgraded in May 2015 and since then MTN are billing me double and even triple my contract fee which I have signed for.<br> My contract had to be R650 a month but now I'm billed from a R1000 and more.<br> Every time i have to hear no usage limit have been set I have spoken to so many people that have set a usage limit and still the problem wasn't fixed.<br> I have reported this problem how many times on Hello Peter as well and not even a answer back.<br> I refuse to pay a Cent more than R650 Cause I have signed for a usage limit the day when I upgraded.<br> I'm thinking of getting this contract cancelled because I'm not the one in the wrong MTN is the one in the wrong.<br> My phone gets suspended every month and then it's hours even days of fighting to get my phone unsuspended. <br> Why am I paying MTN to have to have this struggle?<br> I have done all I could and still MTN can't fix this problem. I mean this is getting on my nerves now.<br> MTN 808 call center operators are so rude you can't even get a word in. they don't give you time to speak and the consultants at the shops can't help you as well . The computers are always of line or they have to get back to you and never get back. <br> PLEASE GET THIS SORTED