Who called from 3107035785

I keep getting calls from this number.  When I pick up and say "hello", there is only silence.

Has called multiple times - when I pick up there is silence on the other end.

Got a call here at work, answered - including identifying myself - and the caller hung up. Called them back and asked the woman who answered why they called me. She asked the number called and if a now former employee worked her. I said, "No" and to remove this number. We'll see what happens.

i do not know who this number is. i am on the donotcall.gov list. they do not say anything

I keep getting this number up on my phone and they don't leave any message at all..