As for when I expect it to get concluded - within 14-30 days. I will just go through Amex. The manager told me they won't charge it back,. I bet they do. They always have. Amex is much nicer to me. I don't even have to talk to anyone charge it back online, photo them the evidence, and good luck to the St Regis. Ive called Marriott twice and wasted 30 minutes waiting.Amex will fix it with no effort. Im definitely in the right here, but Amex and other cards certainly value you based on what you spend. I even heard of them eating a charge back to keep a customer happy. No chance they don't reverse this