Same here - many calls and hang-ups. I just re-upped my Do Not Call List because of this. And when I called them back, I got the same message as the original poster.
Says Local Caller, but 317 is not my area code, so it's really not local. I don't answer, and it's not important enough for them to leave a message. With the upcoming election, I'm guessing it's a voter poll and the caller will stop after next Tues.