Received a robocall on my direct office line just now from a company claiming to be the Marriott Hotels chain.  They said that because I had booked with them recently, my phone number had qualified for a complimentary night's stay.  It was followed by the usual prompts to press 1 for more information or 2 to be put on a do not call list.  I pressed neither and hung up.
I had booked a Marriott hotel stay for my boss from our office's online travel agency a few weeks ago, but I didn't trust that this call was coming from the company.  Nothing came up on my caller ID, and the number didn't pop up as being associated with Marriott when I Googled it, so I'm reporting it here as a likely scam call.