The same thing happened to me right after I signed up for unemployment. They call but there's never anyone there when I answer. This is on my home phone. I very rarely give out my cell #, only to folks I know.
i got a call from this number almost immediately after i was searching for jobs on a site called SocialJobSearch. the page also had an annoying pop up. no one was there though. the site was a link through yahoo.coms email. the site itself only searches listings from other search engines and re-directs you to them such as monster, coroflot, and others.