www.pdf-bill.com Internet rip off Internet

I was checking my online information for my checking account at my bank and found a transaction made by www.pdf-bill.com that I had not authorized. Upon calling the phone number listed, I was only able to make contact with what sounds like a fax connection. I have no idea what this is all about as I have not done business with this so-called company. This is obviously an internet rip off of some kind that compromises one's credit or debit cards. Beware of this scam. Now I have to get to my bank and file a fraud report and cancel my credit card account that was compromised. And we're told we're secure with on line transactions? I think not.