Who called from 2108923504

I extended my VM pickup by one ring (U Verse), and they hang up.
But are still calling every 10 min.

Same as above post.  Relentless in calling again and again for days.  Leaves no message, and we don't answer.

They called at 7 pm. Silly me, I answered. Recording said "Please answer a few questions about ..." CLICK ... BLOCKED

they keep calling my fax line but won't answer when I call them back, like it's a computer dialer.... they've tried 10 times in a few days

Answer to see who it was - Some kind of "voter research"   Suspect it to be scamming LIARS.