Who called from 2107570612

Received a phone call.  No message left.  Caller ID said "Unavailable".

scambags?

Called 1/23/16, 1:43 pm. Did not leave message.

Blocked it.

Answered call from this number.  It was an automated survey. The first question was about social media usage.  It Did not offer any options to opt out of the survey or future phone calls.  All it allows you to do is answer the questions or hang up.