....but if you can find a direct contact for her you could reach out and explain that your credit card is showing that this location is not classified as a Restaurant. ("Merchandise - misc" may not be the actual merchant classification, Citi aggregates similar codes into categories as explained in the terms.)
There is a 'contact us' email form on the website. I sent in a note explaining the issue. Not gonna help my situation, but if they fix it at least other future guests won't have the issue.