unhappy client

I have been an MTN client for the past year. Of all the networks I have been with, MTN is the worst! I use my personal phone for both personal and work purposes. It has really been an unwelcoming experience and unprofessional. Countless times I would need to dial the same number over 3 times for me to go through. While my airtime balance is over R100 it would cut my call because I have reached my limit. I called the call centre countless times! I am always told the same thing! Remove battery and refresh! When you on an important call with client this is really unexcepatble. It just puts pressure and stress on me unccesary! Now my internet connection doesn't work, I was told to call 1555 as everything looks fine on their side. This technician asks me if my sim was cut to fit in my phone. Really?? This has really been a terrible service that I am terminating my contract with them! It is just always something with them!!! It has really become ridiculous, the call centre can't even answer to these. One supervisor said I was the first to come up with this \you have reached your call limit"story. I know that's not true because my boyfriend has called before & friend of ours too!"""