Got a caller ID'd call from this phone number and "he" (very professional, youngish-sounding American male voice) left a weirdly generic message without IDing himself: "Hi! I'm sorry I missed you. When you have a moment, you might (give me?) the courtesy of a call back on my cell phone at area code 417-725-5555. I look forward to speaking you. Thank you. Bye now." Clearly that cell phone "call back" number doesn't jibe with the originating number ID'd.
Strangely, 417-725-5555 ties back to a Patrick McCaffrey, real estate agent (estimated age: 60), in Florida or (probably his wife) Ellen Marie McCaffrey. I know neither of these people, nor do we have any business with them. This call back phone number ties back to Nixa, MO. The 317 phone number ties back to Indianapolis.

Called 3 times today.... called back and said " enter pin number followed by #..scammer.

They just sat on the phone and finally hung up.

Yes everyday you can hear background noise and nobody talks.

Tons of noise in background.  Said she was from Monster Direct (never heard of the) and wanted to set up a call with her regional director next week, then hung up.  Her name was "Lexy".