Cell C
It's a lot cheaper because you can't use it!

I got an iPhone 5 contract with cell c and ever since I opened the contract 3 months ago I've struggled to do any business!
If I make calls the person on the other side can hear me but I can't hear anything most the time.
Calls don't come through and I can't browse the Internet or get emails or messages when I'm at home or in Pretoria Central.
They also don't have a call waiting option on their network so when you are speaking on the phone everything who tries to call you thinks your phone is off!
I hope they fix the network problems because I'm really starting to regret moving from Vodacom.