If your Sunday hours state 9am to 6pm how about you honor that. If the number of customers was the issue then you state that. I sent my teenage son in at 4:30pm and he was welcomed to a locked door with people inside looking at him and discussing whether to let him in or not. The staff didn't even have the courtesy to say we are booked just waves his hand over his neck (to say no). You just lost 4 customers. Learn about customer service because your establishment is lacking it.