Poor service from Cell C

Having major issues with Cell C network. Lodged a complaint some months back, Was contacted and told the matter will be looked at and I was not called back thereafter. Cell C's network is terrible. Even on full signal the other person on the line cannot hear me. I am paying for a service that I don't even get. I am really fraustrated and disappointed and I will take the matter further with higher authority. I receive no signal at home and cell c needs to understand that the monthly fee is for the phone and the service/network yet I don't receive the service so why must I pay cell c ? If I had to stop paying cell c they would be ever so ready to call and ask me for the money but when A customer has an issue its all forgotten. Cell c is a terrible network and I want to be contacted immediately. Also I have over 90 minutes available and yet when I make a call it's coming off an extra R50 limit I took on the contract. What is going on Cell C? Please sort your network out immediately.