3 Weeks no internet, inept call center!!

I moved to Vox at the beginning of the month on a 4mb Uncapped line. I had a week of slow internet and when I phoned to ask why, no one knew why. The next morning (10th December or So) I had no internet. I haven't had since. I have phoned them almost every day since then and no one can help me, I get shunted to Telkom, they say there is nothing wrong with the line but my Account has been suspended from Vox. I phone Vox they tell me some other department is dealing with it and the account isn't suspended. They will phone me back. For two weeks I haven't got a phone call back once! I phone almost every day. This is the worse service I have ever had from anyone. When I ask to speak to a supervisor, they just ignore me. My phone bill is ridiculous as is my data bill as my phone has to pick up the slack. I cant cancel because they insist I have to give them a month notice. Why should I have to keep to my side of the contract if they aren't giving me service. I am completely fed up.