Usual hangup if you pickup and wait for them to speak. They use several 408-x11-xxxx #s. Just have to enter 408x11xxxx into the call blocker to catch 'em all.
has been calling for months, no answer, hangs up, no message, will not answer when I call back. DIRT BAG! Get a life. Go back to where you came from...under a slimy rock.