I just got a call from this number (972-401-2369), and the woman I spoke with said that my phone number was selected to win some prize, or something. She was difficult for me to understand, and she would not specify how she had gotten my number. If I understood correctly, it was an American Airlines promotion, or something, but I haven't flown on American Airlines in the last long while, and I didn't enter myself into any drawing or sweepstakes with them. I'm not saying this call *wasn't* legitimate, but I'm skeptical enough -- and there were enough red flags ("You're wondering what the catch is, right?", "We're not trying to sell you anything," and "Sounds too good to be true, right?") -- that I didn't stick around on the call to make sure. I told her, that I hadn't entered any drawing, and I wasn't interested.
Got a call myself, claiming to be from Southwest. When they said the prize was for couples, and demanded to know who I was going with, I started laughing. When asked why I was laughing, I said because I didn't know how much of the call was real, and how much was a joke. She hung up. :) I'm quite tempted to call her back asking about my prize :)