Breach of Contract and Passing the buck

After 4 monthsnobody at MTN seems to know how to fix their own mess. I'm finally on the right contract but nobody can tell my about the money that dissapeard from my phone as well as the money I didn't get because of their *****up. When the finally put me on the right contract they once again took my money. So what they owe me is now R1700 and change. I wonder if somebody is going to respond to this complaint because thus far the only responses I received was the generic answers that somebody is coming back to me. So far after 2 complaints on this site and I really don't know how many emails I still have not gotten a response. On the phone I have been getting people that don't have the authority to change anything or even to contact somebody who has the power to answer my complaints. And unlike when the customer breaks contract, I can't do anything to them, I can't cancel the contract on them. So be warned before you sign anything with them - the 7 days thing is a lie, because I originally discoverd the problems with my contract within 7 days and was not allowed to cancel. Just got hung up on and just before after 30min just when I was speaking the person ignored me.