By Lauren Habig,

There are things that we’re all taught not to say. Don’t mention an old flame in front of a new spouse. Never ask an older woman her age, or a younger one if she’s pregnant. Don’t ask about someone’s salary, shoe size, or anything to do with their romantic life.

Even support agents, who earn their living by speaking to customers, sometimes, need to be reminded what they should and should not say. At Desk.com we talk to a lot of customer service professionals. Ranging from merely cringe-worthy to enraging, here are eight things they recommend your team should never say to customers so that you can deliver the best possible service: