Crunch Fitness review: Memberships/extra charges that I was unaware of

I've been a member of Crunch Fitness since 2016 and had recently added my son for $1for the first month. After that, it would be $69.99/monthly. Our schedule changed and he was no longer able to make any of the class times so I decided to freeze the account until I could figure something out. Well thats when I noticed I was being charged, not only once but twice (69.99×2)! I called immediately to find out that my son was signed up twice, one being his actual name and another with my last name and a nickname as his first. Guessing this manager needed his sales up. Well all this prompted me to look into every transaction made by crunch through my banking app. This is where I found many random charges made that I was unaware and I know I shouldn't have been charged because up until a month ago, I was the only member on my account. I could only see as far back as 2021and there were many charges up until then, mind you I've been a member since 2016. I'm currently waiting on my account transaction documents (by mail) dating back till 2016 so that I may look through all the extra charges which I'm sure I'll find. I went in to speak to the manager and pointed out the charges which conveniently weren't charges seen on his system. He blamed ABC Financial (gym software they utilize), told me to call them and see what they could be charging me. If that's the case, this problem is BIGGER than me. This is criminal! Make this make sense!