Pathetic Network :-( customer service Irate custo

On the 14/04/2015 I had gone into the store to book my phone in for repairs. I have constantly had problems with my phone- the battery. I had gone into the store and spoke to the manager, Nivesh who had advised me to take my phone to Samsung STORE as they will replace my battery because Samsung is aware of this common problem. I had gone into a Samsung Store only to be told that I would need to leave my phone and they would check what the problem is. I went back to Cell C and spoke to NIvesh as I was now irate because I could no longer handle my phone constantly being on a charger. Instead of advising me, he started talking to me about renewing my contract. Being irate at that moment I decided to book my phone in for repairs.Besides the non-customer service, I have on numerous times complained about the reception. On taking out my contract, I had asked if the network covers the area that I live in and I was assured by Nivesh that it does. I then realized that I had no reception at my workplace and notified him as well. He then told me a year ago that the problem would get sorted out as they were going to install a tower for better reception. nothings been done! Cancel my contract!!