Big FISH Casino Charging without Authorization through Apple Internet

I started using Big Fish a few months ago, I liked them. The issue I have is that I noticed that there seemed to be charges that I did not authorize on my account. I changed the card on my Itunes account and moved the transactions to an account where I have limited transactions so I could watch.  Then I stopped making any purchases. Sure enough, I am seeing charges from Big Fish on my acocunt. I deleted the card on file in Itunes and guess what, they STILL were able to get the charges approved. My bank informed me that once they have my debit information, they may be using the card without authorization based on the Terms.  

I've never been one to play games online for this very reason. The issue is that I have zero credibility against a "casino"- it's assumed I am a sore loser. Someone should report them to the federal trade commission. I feel confident theie books are not on the up and up.