Received call at 1840 hours EST, 6 Feb 2012 on my cell phone. Did not answer.
Read the comments -- this likely is a scam that's been around for a few months. Phone rings, an automated voice asks if you want to take a short survey about the national debt and if you take the survey you will receive a free cruise to the Bahamas for two. If you take the bait, they ask for a credit card number because the cruise is free except for some "taxes" you need to pay.
Received a missed call from this number (on my cell) about half an hour ago. They left no message, and I have not called them back. I live in Southern California.