MTN does not solve problems because they make mone

I purchased several mobile contracts from MTN. At no stage did the sales person tell me the data line is open even once you have spent your phones quota. I requested MTN time and time again not to sms me the accounts to all the different phones but to send them via my post box number. Have they done this? No. Why? So they can keep on der*****ing me. I requested that my credit limit must cover only my contracts. So how does MTN solve this problem? They increase my limit to R10 000 to cover themselves and while waiting for an answer they rip out R12 000 out my account. Did they solve my problem? No they go and do it again. This is a warning to any one wanting to take out a contract at MTN. They will keep on *****ing your money.Please note I did not ask them to increase my limit to cover their mistakes. I want my money back and MTN to do something about the 20 requests I sent them