"Customers should always be treated with respect at a restaurant. After all, they are the ones paying for their food. If there is a misunderstanding about an order, staff should not argue with the customer in an attempt to defend their ego. Instead, they should apologize and promptly fix the issue. It is important for restaurant staff to remain professional and prioritize customer satisfaction. Fixing the mistake and rectifying the customer's order should be the main focus, without any further debate."