OVER CHARGED ON CONTRACTS OF THE SET LIMIT

I am very much disappointed about the way MTN has treated me with my contracts. I signed a contract which stated it clearly that my limit must be set to R329.00 but for more than five months I have been overcharged with the following amounts in 2015: March - R636.11, April - R949.33, May - R884.84, June - R3581.31, July - R6231.81. <br> <br> I went to the bank and tried to reverse R6231.81 and on the 21 August 2015 I received SMS where MTN was notifying me that they are going to deduct R10598.14.<br> <br> I am really frustrated because the fault is of MTN employee of Wonder park who did not do the right thing. this has affected me emotionally and financially. all of my finances are crippled.<br> <br> I am thinking of cancelling the contracts but the problem is that I will still have to pay the cancellation fee and other amounts.<br> <br> Could you please help as I have logged many complaints to MTN Customer care but I do not get any help instead they are telling that the limit was not set but I am showing them the contract that state that the limit must be set and they do not want to take it.