'Normally' most banks will react positively if you approach them in the right manner, specifying that you were scammed & paid for something that was not what they claimed. Offering them URL links to the scam page here might even help; Known Scam Sites (click on link) pointing out to them that the site in question has a history of scamming people.

In this scenario, this might not help but worth a look through: get your $$$ BACK!!! (music members).