Upon return from Gencon 2016, I received my hotel bill via email and found I had been overcharged by the Crowne Plaza Airport by nearly $500. Repeated calls to the hotel got me put on hold and hung up on several times. Finally, I got in contact with a manager who told me he couldn't do anything.
I've contacted Gencon Housing (who is looking into the matter), but they were honestly shocked that this happened and weren't sure what to do. Needless to say, I will not be doing business with this hotel ever again. I recommend everyone else should rethink staying there in the future as well. Your wallet will thank you.