The most pathetic MTN STORE and regional manager

I went for a upgrade on the 2 Nov 2015, I had no signal couldn't finish a phone call so I went back on the 5th Nov 2015 before the 7 days are over wanted to cancel the upgrade the I was told no its the phone, they gave me new phone then I asked the consultant twice should I come back in 2 days before the 7 days expire and his answer: NO MAM I AM REDOING THE WHOLE CONTRACT SO YOU HAVE 7 DAYS FROM THE 5TH of nov 2015. I took the phone and the signal/coverage was even worst on 11 nov 2015 I went back and guess what I was told no my 7 days has expired I must have misunderstood the consultant. Now they use the excuse we are waiting for the regional manager DOUW van Dyk or Wyk he is to pathetic he said the matter will be resolved on friday 13th nov and its the 18 nov im still waiting for this ***ard to resolve the matter and he is nowhere to be found and no one at mtn are prepared to help me not even their head office. When I go into the shop I am handled terrible I am laughed at, they are arrogant and sarcastic and now I have this contract going of my account but I dont even have the phone!!!