Who called from 2017200809

Robo call:  "THIS IS TO AUTHENTICATE YOUR GOOGLE LISTING. PRESS '1' TO VERIFY YOUR LISTING."

I got a missed call, so I called back to verify. No one picked up.

I didn't answer... couldn't get to the phone in time. I was just inquiring who the number was from... Please prevent them from calling again.

Received a call from this number, but there was no one there, at least, I could not hear anyone. I then heard the click when someone/something hung up. I tried calling back, but it kept saying "this party does not accept blocked calls." I was not blocking my number, and my number is not private or blocked.

Dead air, nobody there.