Who called from 3122739545

Called, didn't leave a message.  My number is on the national DoNotCall list.
Assuming it is an illegitimate robo-caller (scam, telemarketing, whatever) that I'm not interested in anyway.
This number is blocked from now on.

I got 2 missed calls rom this number,,, no message

They called today, did not answer.

Received a call from this number - I was in the middle of another call.  When I tried to call back, nothing happened - no ringing, nothing.  I think they should be charged for calling my cell phone.

Has been calling my cell phone every-night for a month.  I never answer calls I don not recognize.