Yep, it's the free cruise/survey scam. Call back gets, "Thanks for calling. The survey you were called for is now finished." There is no survey just some nonsense questions. You'll be offered a free something for completing the survey then asked for your credit card number. It's a SCAM. Block it. Here's a news report on it:
https://www.youtube.com/watch?v=I4tY1kz6lZ8
http://scam-detector.com/travel-scams/free-cruise
http://protectingyourpocket.blog.palmbeachpos ... n-package-scam/
http://www.floridatrend.com/article/20232/flo ... -vacation-scams