Hey emanon256- thank you for your post- does not sound like a rant. I am very surprised you have had this experience at this particular hotel- I have also stayed there however fortunately had an excellent experience- also some friends of mine actually bought a timeshare there, and they are very demanding clients (i.e. it is difficult usually for Aman to keep them happy)- so this is not standard.
I do suggest as others have that you write to Mr. Marriott with a clear letter of what happened, what you did about it, what has transpired, and what you would like. The one thing to be sure of is not to exaggerate your complaint, and I don't suggest using phrases like (never stay at a Marriott again) as they don't really address the problem- and a major hotel executive does know already that upset guests may move to competing properties.
Please also let everyone here know how it works out- and hopefully to your complete satisfaction!