A month has elapsed since your original query which is more than enough time to wait for a reply. I would reach out again and check on the status of your query. It is entirely possible (probable), the hotel is just dragging it's feet and not responding to MR customer care. You might also want to engage The Marriott Bonvoy FT Lurkers to look into it for you.

What problem did you experience at the property and which property? If you're looking for compensation, what were you expecting? It helps to have specific compensation in mind. Of course it should be commensurate with the issue that was experienced.

--Jon