Did not answer as I do not answer places I do not know and they did not leave a message on the answering machine.

I got a call from this number and answered it.  The caller said I had won a free home security system from Guardian.  I didn't proceed any further.  Figured there was a catch coming at the end of the phone call

I mistakenly answered and the man on the other line explained that I wouldn't need to make a donation but they have a security system they could install that I won. I hung up right after.

They left me a message that just gave me an automatic system telling me they weren't available. Scam at best guess.

Very rude person hung up on me when I would not agree to accept a "free" alarm system.  Beware if you do not want an alarm system from this company block their number and report them .