overcharged repeatadly!!!

Myself and my mom have been constantly overcharged on our gym membership. We are both on vitality but this morning I was over charged and I have until next year to complete my 36 visits so why are you taking extra money from our account?. No warning was given that I'd be over charged and now il have to chase both Vitality and virgin active to get my money back. That is *****ing as I can't imagine how many other customers you are ********ly over charging g like this. I was told that I can not query my mother's account but when she herself emails vitality and virgin active they do not even respond. Please may you urgently refund us the extra money you have BEEN taking . This is not the first time this happens to me ad I had to query this again a few months back when I was overcharged in may because virgin active had incorrectly sent my log ins to Vitality, but it better be the last! Pay back the money!