Debiting our bank accounts with 3times the amount. What a shock !!!!

I have a membership at Virgin Active. I am a Discovery Vitality member. There was an arrear on my vitality account which I rectified at the beginning of July. Virgin active said all is in order only for them to debit me 3 TIMES the amount now in August. I called Virgin Active Glenvista and the staff said to me that if I do no listen to them, then they will put the phone down on me. To which they did!!! They took my money without my consent and then put the phone down on me as well. I don't think debit orders should be in place with organisations like these. Too risky.