Worst service from vodacom

I have received the worst possible service from my network supplier vodacom...i have a LG G4 phone for the past 5 months after renewing my contract. That has to be the worst possible move . firstly i have been billed bis and i dont even have a blackberry phone . i spoke to numerous consultants online and at the service shops and none got back to me or sorted my problems ..one even told me i should have told the person doing my contract not to charge me bis because i have a LG phne . i have called and holded online for hours ..transferred to different people ..its disappointing nd i would never recommend vodacom to anyone ..im still waiting for someone to help me ..