I just got one of these calls today. Same story about a free nights stay at a Hilton in Manhattan or Orlando. I WORK for Hilton but have no idea what this call is about. Dont trust it. I am reporting it to Hilton today.
My calls are about the same as most. The number comes up on my cell phone. I don't answer it and there is no message left. I am glad I found this site. I will call them back and have my name removed (even though I am also on the do not call registry).