they call our office at least once a day, EVERY day.  i answer, and there's just dead air on the other end.  i normally hang up when it's clear there's no one there, but today, i stayed on, and was automatically disconnected.

what is the point of calling if there's no one on the other end and then the call hangs up?

i tried calling the number that came through on the caller id (the one listed above) and it said that my call couldn't be completed as dialed...

These guys call at least five times a day, never leave a message, and no ones on the phone when I answer.
I'm ready to call the FCC.

They call few times a day.  Never leaves a message.  Caller ID shows "Name Not Found"....

"Unavailable"