Some call about special conditions to get you a free stay at one of their hotels.
It is like so many calls another scam. My response was to call the Marriott complaint number, 1 (800) 535-4028. They are well aware of this and are working to shut it down.
My suggestion is they work with the media networks with whom the run advertising to do public interest stories during the news programing to advise viewers of the scam.
jtk