Avoid Cell C Poorest Signal in the country

I recently switched my account from MTN to Cell C.What a mistake.I am struggling with internet connection,cell phone signal when I receive calls and whatsup messages that does not go through etc etc.I am a business man and need to make and take a lot of calls everymonth.Since I switched to Cell C this process was a nightmare and a frustration to say the least I cant hear people when they talking to me my messages does not go through I am struggling with my GPS signal etc etc.I would like to know from Cell C what are you going to do to resolve this issue?I am going to stop my debit order because I cannot pay for something that I dont get service for.You are in breach of contract as you tell people you have the best network in the country.You are lying MTN was much better.Get back to me ASAP