Earlier this year, I had a property charge me for 6 nights when I only stayed 4. My reservation was for 4. I got a receipt when I checked out showing 4 nights. I had plane tickets showing that I'd left. The hotel told Marriott that I stayed for 6 nights. Marriott would alternate between telling me that it would get fixed to it was between me and the property. No one could get in contact with the GM at the property. I should have just called my credit card company, but at some point, I wanted to see how long it would take to get it fixed. After a month, I gave up and did a charge back with my credit card. I'm a Hyatt Globalist now.