Resto question I read on a resto review site.

Someone beefed about a highly rated restaurant because

a. he made a reservation for 9 pm.

b. arrived at 9:20 ( never called to advise )

c. when they arrived, the chef had decided to close kitchen and refused to cook. The resto advertised that the kitchen closed at nine thirty.

Was the chef wrong? What does that closed time mean? If your fanny kits the seat by 9:30, is the resto obligated to serve?
I can see where they assumed the guy wasn't going to show. Maybe this was their punishment for his not calling, but maybe he got stuck on the road or sumthin.

Was he justified in his complaint?