Calls and never leaves a message. This got picked up by the google spam database so I'm blocking it permanently. I've got about 10 of these numbers blocked that are some form of this. Always you won some sort of vacation or cruise but if you call the number back it says the survey has ended.
Just received the 3rd call from this # in two days. I blocked my number and called it back. Got a recording saying that the survey I was inquiring about had already ended but to press one to be removed from their list.
Called didn't leave a message. If it's true that when you call back you get a survey is ended then this is most likely the scam where they say you've won a free cruise if you answer. I have 9 of those numbers blocked that do the same thing.