Extremely bad service

I have been trying to settle my account with vodacom after been over chargers for data. They handed me over to legal and still send me statements every month which I have been paying current and up to date. When I call vodacom to discuss my account they say they can't assist me because my account has been handed over when I call the attorneys they tell me they can't assist me because my account is been disputed. Vodacom has not sent me a closing account letter and always give me the worst service ever it's gone 4 months and no resolution or contact from vodacom.