Bad Signal by Cell C

I have been with Cell C since they opened their doors Many years ago. In the past I had problems with Cell C but were able to sort it out. But for the last year and a half the cell phone signal has gone from bad to worse. Cell C promised last year when I renewed my 2 contracts again. Every now and then people complained that they cannot get hold of me. Last week Monday was the last straw. I phoned myself from my Telkom line about 10 times and were only able to get through twice. If I drive to any place in South Africa, Sometimes I will only have coverage 5% of the time. The rest of the time I will have no signal. Last week Monday I reported the matter again to Cell C and they gave me reference number: ***. No assistance after someone phoned me back on last week Tuesday. Phoned the CEO secretary Angela and she promised to phone back on Friday, she never did and I was stuck without service. I phoned her again today. They did reset my phone. Still the same problem. Both my contracts is about 1 year into the 24 month contract. I feel that Cell C is in breach of their contract. I pay for a service that I am not receiving. I want it cancelled immediately. Contact me immediately.