Poor signal quality

For the past year and a half the cell c reception in the garankuwa area in Pretoria north is really poor...I am currently in the medical field where I have to constantly communicate with people from a poorer background so I am forced to call or message them on for their appointments. Please sort this problem out as I'm not the only person affected by this, there's a community of people from a lower socioeconomic status also affected.<br> <br> Kind regards <br> Mr Ushir Beharie