Dead air, called the number back and learned it was the Conservative Party of Canada.

I just got a dead air call from them at 2:30pm 5 November 2007

Who is this person, company?

Called at 9:30 p.m March 23, 2009.  I was in bed when the call woke me up.  Didn't get there in time to answer it.

They just don't stop calling me last days, but I don't answer when I see a phone number I don't know. No messages left. But I'm wondering how did they get my number, because it supposed to be confidential.