3 bars and no one can hear me

This is the 3rd day strait that people just complain they cannot hear me. What is going on with your service? I cannot roam on vodacom because cell c claims they have good service here but with 3 bars I cannot make a call. Fix this urgently or I will get a new contract by someone that actually calls. Sorry, but your service is pathetic and I will make sure everyone knows it. Cell c is not to be blamed. My friend has cell c and he came to do tests to see if its the network or just you. He can call and use date with no problem. We tested it in my phone so me and you is jsut pathetic on cell c