We're left to guess who is calling. From a disconnected phone number no less. Most certainly another in a growing list  spoofed non-existent numbers. Seems they are fishing for valid phone numbers. Had several calls this week from "Unknown Caller" and now this caller. Here is the routine: once answered with our now customary dead air pause a computer generated voice responds "Good bye" and hangs up.      ***  Tough luck bad guys, all calls are screened. No live person will answer your incessant calls.  ***