Who called from 7207290905

Got a call from this number, I didn't want to answer because I didn't recognize it. They didn't leave a voice mail. ...

Call 3 to 4 times a week.....no messages!??

Did not identify himself appropriately or represent himself, when calling.

This number keeps calling and I don't answer because I don't know that number but keeps calling and no voicemail.

I swear this company has multiple extensions they call from, because I reject new 720-729-XXXX numbers on a weekly basis.  I verified that I am on the National Do Not Call List.  I think when I applied for a job, which one, I don't know, I was put on a call list of some sort.  Annoying!