Might be a debt collector - asked for the person who had my number six years ago. She and her husband were financial deadbeats and Republicans (got a lot of calls from them, too).
I received a call from this number tonight and the woman on the phone said they were an outfit formerly known as Campus Crusade for Christ, and they are now collecting funds to help Christians who are being persecuted around the world. Nice use of another organizations name to fool the unaware. Just a scam to take our money for someone else's enjoyment.