NO NETWORK!!

I have been calling the MTN call center for the past month now about their bad network. I was given a reference number and when I called back to follow-up, I was told that the reference number does not exist. I then explained again that the network at my business address is very bad for about the past 2 months and I have been unable to make calls or connect to the internet. I have an MTN contract and my data is basically going to waste every month and nobody is saying anything about a discount or credit. I had to called MTN 3 times today and was unable to get through.