Got the call, answered it, hung up when I got the "this is a public service announcement" message. The robo-dialer immediately called back, so I did the rapid-fire stroking of the # key for 10 seconds, which dumped the robo-dialer.
This number has called once a day, everyday, for over a week now. They hang up if you answer and hang up on the machine. Only shows up on caller ID as Red Lodge MT.