This is creepy. My name and number are unpublished and I have gone to several websites to remove my name and number, yet they knew my last name and my roommates last name when they called. They were offering a chimney cleaning service.
Calls every evening; never leaves a message. I have no idea who it is because I won't answer an unidentifiable number. I figure if it was really important, they'd leave a message. To me, No message usually means a telemarketer or scammer.