Caller ID showed 440-555-0191. Caller kept my line open (I was listening on speakerphone without picking up) and left a machine-humming noise for a good 30 seconds. No such thing as a 555 local exchange. Blocking anyway until they figure it out and spoof a new number.
Received 6 calls from them today. Often comes in waves with 3-4 at a time. The moment it goes to VM or I ignore the call, they call back. When I answer, no one is there. I have blocked the number now, so we shall see how many days/hrs it takes them to spoof a new number. Total Scum!