I got the same voicemail about 2 free roundtrip tickets from DFW airport to anywhere in the continental US. I've had a call similar, if not exactly the same as this, within the past year. Either I am extremely good at winning free trips from contests I do not enter, or this is a scam done by one or more "companies".
I entered my cell and home number in the national "do not call" registry last summer and it seems like since then I have actually had INCREASED telemarketer/scam calls to my cell. Has anyone else had this problem? Is that "do not call" registry legit, or just a way to get information?