Called and ask for the name listed in the phonebook. When I said that person is not available they quickly hung up. I also looked it up and the phone call originated from Brooklyn.
I got my second call from this number today... they also called last night, both times they didn't leave a message. When I looked up the number on superpages they said it is a landline based phone number in new york city. Then I did a random search and found this page, which kind of makes me think these people will probably not stop calling...I thought the do not call list was going to prevent this...