Called, I picked up, and the person said that since I stayed at one of their resorts recently, I qualified for a free something (I didn't let them finish, as I then knew it was a scam). I haven't stayed at ANY hotel or resort in chicago with in the past 12 months!
Got a call from 312-878-7601. Don't know anyone with that number. Did not answer and the "caller" did not leave a message. These people are a waste of space.