Virgin not so Active clueless

Its been 1 year, and i have been over-charged every month.I have dealt with people at the gym, HQ, Callcentr, customer service etc, I have spoke to about 5 people who have come and gone, its no wonder you guys have such a high attrition rate. I keep getting told they cannot find my vitality number for my daughter, and yet they still debit me double my rate every month! How do i win against such incompetence.