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.
(..) desert storm. Didn't come back right. He'll tell you all about it. Ma'am, please, control yourself. You're distracting my customers. I'm sorry, but it's not healthy to suppress A post-infectious cough. Better. So glad to hear it. (..)2016 TvShow: Bones Title: The Secret in the Service Season: 11 Episode 17