no network

I've been a Cell C customer for many years now but I'm sick and tired of their network. I cant wait to end both my contracts and luckily for me they ending soon. Every time I want to make a phone call or use the internet there seems to be no network even though my network bar on my phone is full. Cell C brags that they offer free facebook and whatsApp but what's the use you have all this for free if you don't have a network to support your applications. Its very frustrating that I must always phone my wife on my sons MTN phone because I cant get through to her on her Cell C phone, and her phone is on. What's the use you have a phone if you cant make use of it. I don't mind paying as long as I know that my network can provide good service, and I can make use of it when I need to especially when I have a family emergency. They are real slaptigers!!!