some hotels do keep a blacklists but before the guest is placed on one, the gm will call and inform the guest that he is no longer a welcome guest at the hotel and explain why.

I have been with the airline reservation department and have a few friends who run hotel front desks. a lot of times, you be surprised that female customers tend to be one who are very vocal in conversations but also are the ones who demand OT and abuse service staff the most, at least in Australia and Asia. The irony is that when you question the culprit, they say they should be treated well because they are women and if not, you are illtreating them.

I would be interested to hear how Fters deal with difficult customers, be they male or female but obviously prefer how to deal with problem female customers.