I keep getting calls from this number, but when I pick it up no one is there.

I was finally able to block this number after talking with my phone provider.  The calls were several times a week for over 6 months and continued even when I requested that remove my number from their calling list.  Agree with Johnson

I was on the phone and this number came up. It has been on my phone more than a few times over the last year. I have no idea who it is and I don't answer.

I get at least 4 calls from this number everday. I tried to call it back and nothing no ringtone.

several calls in the afternoon when no one is home. Repeated