They call constantly, and hang up. I'm sure it's an auto-dialer and connects who ever picks up first out of dozens of calls made, that's why most of us get a 'dead' line.
The company is indeed PCC, or Political Call Center based out of Mesa, AZ. They're business line (I found the number after a little searching online) is 480-649-2753. I Also got a human being to answer 480-603-3795. I asked to be removed from their list.
For those of you who want to cause them a little grief, call either number listed above...many, many times. Tie up their business lines. Call and hang up over and over again (Why not? That's what they're doing to us, right?)