It is very impolite for a caller to hang up before the phone is answered. This one was a political call. Having spent my life in the "news business" I am quite adept at tracking these down. Aha! I tried to call back...listed as non-working number. It was, obviously, a campaign call supporting some candidate. There are ways to discover such impolite activity.
This person or company keeps calling constantly, wont leave a message, and i cant call back because this is a non-working number. Very annoying, pleasa get a LIFE...