You should report the number to your authority's on this anyway.. Here is the information you need to do so:

http://800notes.com/forum/ta-94646df8de0df64/ ... -debt-collector

I received a call from this phone number today, claiming I owe and out landish amount of money.  They are saying they are from Y WEB SITE SERVICE a debt collecting agency and  are out of Montreal.  They gave me an address to mail a check to pay off a balance.  They said they would call back this afternoon to get confirmation that a check went out in the mail.  I thought it was a scam, now I know it is. They will not get anything from me.

I got the same phone call today and immediately understood it was a scam. Man, with a heavy accent, presented himself as a manager,Billy Sander,s and told me to pay or they cancel my website...I started asking many question about their company name, location, etc. He was very pushy saying that I signed an agreement and have to pay. I told him to fax me info, otherwise I will not pay anything and that I never heard about them and did not make any agreement. Then I hang up. The call was from blocked number, but I asked "Billy" to tell me the company name. When later I called, they have all answering set  machine up... SCAM a big time!

18 Nov 2013
Some of my people fell for this last year and paid some of the bill before realizing it was a fraud!
Now this year they are calling again claiming they are owed more money.  They keep calling and harassing our staff.
Last year they claimed to be representing advertising on www.411infopages.com which recently expired as a registered domain.  It was registered via Domain by Proxy in Scottsdale Arizona.  A company that keeps their clients identity secret.  
Some of their bills indicate they are in Montreal Canada but they could be anywhere in the world. We are arranging to have both the Department of Justice to track this down.  Any info you have should be shared on this website.  People do answer this number if you call.    Don't call from a number that will show up in their caller ID.

This number belongs to 411yplist.com a scammer who will call to tell you they are closing a listing that you never had and then try to bill you for it.  Don't verify anything or even talk to them if possible. Another number associated with them is 514-223-1679