For one of my stays, the points posted was 552 points short. I filled the Marriott Missing Stay form (as they don't have a dedicated form for Less Points Posted) and submitted it. Without even reading the comments, the customer service gets back staying stay has already posted (even though the reply had my submitted form which clearly showed my comments stating issue is not with nights but points). I have experienced similar before and I usually reply to that email and I get it sorted after 1-2 tries and I have learned to live with that.

However, this time when I replied, the email bounced, "stay.add [at] marriott [dot] com The e-mail address you entered couldn't be found. Please check the recipient's e-mail address and try to resend the message. If the problem continues, please contact your helpdesk."

Regret to see that they have now disabled the option to reply to customer service emails.