Remember, the 'customer' is always right. [=never argue with a customer]
He is one tough/tricky 'customer'. [=he is a tough/tricky person]
The company has good/poor 'customer' service.
(..) - Hey, you're gonna have to wait your turn... - like everyone else, meter maid. - Actually, I'm an officer. Just have a quick question. Are your customers aware they're getting... - snot and mucus with their cookies and cream? - What are you talking about? I don't wanna cause you any trouble, but (..)2016 Zootopia