What if the customer blew out on you? For me, i've been a customer and an educated customer.i treat everybody from a tea boy up to the staff respectfully. If the staff don't treat me well so i will politely give her a piece of advice. I dont beleive any on this saying "customer is always right". A customer has no right to shout at you as if he's feeding you. It's not a matter he is your customer, it's all about you are both human being and if you want to be respected you also know how to respect people.