worst carrier service

our Vodacom Internet service is slow, at times hardly working. Data bundles get depleted for no services. At times they even go to the extend of using your airtime without sending a notification that your data is depleted. Vodacom in Mmabatho/Mafikeng area seems to have low standard services, that needs to be improved.... Thinking of porting to MTN..... It has prospects in Mafikeng, uses are not encountering our problems