Over Charged Again

I dont know if Moses from head office was really helping me or trying to calm me down so that they can debit my money. They have been calling me for the past 3 weeks telling me that they are really sorry and they are resolving the matter of me being over charged. December they said i owe them about R5000 Late December it was about R2300 now January the team from head office have been calling promising me that the mistake was fixed i owe them about R800. I said its impossible because i only owe you one month December that you guys didnt debit, They said also January . How can i pay January whilst all my lines are closed not because im a bad payer because of their stupid mistakes. On 2 contracts one being R199 and the other being R129,HOW CAN I OWE THEM THOSE BIG NUMBERS?? Okay today i woke on a debit order of R2389.66 FOR WHAT? I want my money back and you should take everything that belongs to you there are alot of networks out there. I really regret the day i moved from Vodacom.