You should probably contact your bank and see who authorised the debit. A few years ago my bank (Bank of Ireland) contacted me to say that an unusual transaction had taken place - it was a payment to ancestry.com and they were suspicious of it. It turned out that my account had been hacked and a lot of money taken. The bank reimbursed the amount, and launched an investigation but I don't think they ever actually caught anyone. I am not saying this is definitely what has happened to you, but any unusual or unexplained removal of money should be reported to your bank for investigation. Sorry, I don't know a phone number to contact the site you mention.