Misleading information/lying to customers

I noticed when I pulled my statements that zone fitness has been debiting my account since January. In January I went to Trade route mall with my son and the guys from the gym wanted to sign me up and I told them I am not interested because I will not have time to go as I work in town and then have to go and look after my son. My son insisted I join, Suvi then said I must listen to my child, I then advised I will join but only if I can bring and gym with him as he is the one who is fascinated by the machines and he said yes I will gym with him. I signed up and the following day we went to the gym and when I went to shower when I came back my son told me some guys told him he is not allowed to use the machines, I then asked for those guys and I advised them that I only signed up because of him and if they say he can't use the machines then I want to cancel. They said it's fine it will be cancelled. The following day I sent an sms to the guy that signed me up and I told him he had misled and I hope he will cancel the membership as I spoke to some other guys who told me he had **** as they don't allow kids under 12 years on the machines, he advised it has been sorted. I always missed the debit order as it goes off with my other debit orders until when I had to get my statement and checked the previous months statements and the debits are there. Can Zone Fitness cancel this and give me my money back.