Julia had posted the details sometimes:
To assure that your concerns are addressed and corrective measures are taken to prevent a reoccurrence, please contact Hyatt Consumer Affairs at 1-800-323-7249 between the hours of 6:00 AM - 11:30 PM CST, Monday - Friday. If you prefer to correspond via email, please forward your name, contact information, and the details of your visit to:
[email protected].
And they are really helpful !