It has been my experience in Asia, as well as in eastern Europe and in the Caribbean, that when the hotel staff, of any hotels, not just Marriott, feel that they are right, they will not want to budge. I believe that the reason for this is that their home standard of living is so much less than what they are seeing in the hotels, that they believe that the guests are already getting so much, that giving more would just be allowing the guest to have something they are not entitled to.
My guess is that you will find that $200 may represent the true cost of points which were charged back to the hotel after the problem was supposedly resolved to Emanon's satisfaction (with a bit of an assist from me) over one month ago. If this is true, then Emanon should go back to the very same person in Mr. Marriott's office and ask her to intervene again, requesting that the charge be immediately reversed, a letter of apology be sent to you, and a further amount of points be deposited in your account for the additional totally unwarranted aggravation on an issue that you had reasonably thought to be closed out and resolved!
Emanon, send me a private message if you feel the need for further advice from me on this.
Andy