Who called from 2107874934

I just receive a call from this number. I let it go to vm. No message left. This is the third call from different numbers in less then a hour.

Caller ID displayed as "Unknown Name", following by an unrecognizable number. I let it go to my answering machine to screen the call. They didn't leave a message. I dialed the number back and encountered a recorded message that said, "Thanks for calling. The survey you were called for has now finished. If you would like to be removed from our list for future calls, please press 9." I then hung up.

The recording did not identify itself what organization it belongs to.

Caller ID just showed a number.   When there is NO name accompanying the number I don't answer.
It's my belief if a reputable company is going to call they would have their company name show on the caller ID.
I receive a lot of calls from the 210 area code and don't know anyone in the San Antonio area.

Phone number showed up on the caller I D.
No message.

Fake warranty scammer robocall. "This is your final notice that your warranty is about to run out"...