Caller calls several times a day and there is NEVER an answer on the other end of the line when you answer.  I've tried to add my number to the Do Not Call List to see if that will keep the number from calling me, no luck with that.  To be honest, I don't know what to do next, do I call the police and make a police report, do I call my phone company, what?

Calls twice a day never says a word then hangs up...Caller ID says HALSTED .

Yep ... calls twice a day, every day. No one there when I answer or they hang up on me. I have called back and no answer. I have added this number to my blocked list.