BrainManager Put A Recurring Charge On Me Without Warning

I just found out tonight that BrainManager has been silently withdrawing $27.90 out of my account every month. I had no idea till now. I never meant to sign up for a membership; I just believed I was taking a simple IQ test for $1.95. There was no apparent warning that this would become a reoccurring payment. I called my bank right away when I discovered the withdrawals, and they opened a claim. At first, it seemed like the money would be returned, but then I found out that the claim had been turned around and the charges were back. I feel like I was tricked and used. It's frustrating that a test that sounded innocent took money out of my account month after month without my clear permission.