AuraVie.com – charged my card without my permission

So it looks like I fell for this scam from AuraVie.com. They offered a free trial and I had to pay was postage and handling. I gave them my card and got the free sample in the mail and a couple of weeks later another package in the mail and my card was charged the full amount for the skin product. I never authorized them to take the money from the card that I gave them.