There’s dumb, and there is the nightmare customer.

Working a customer-facing role in any industry exposes a person to the fact that many individuals are more interested in getting what they want than being right, and also, half the time they don’t even really know what they want. They just want to feel better than somebody who probably isn’t making much more than minimum wage, and they usually succeed.

While it may be true that service employees get things wrong now and then, they also have many moments where they suffer for being the voice of reason. More often than not, the person working at the place is going to know more about it than the person who is visiting, not that you would think that to witness the way that some customers behave. 

In any job where you deal with the general public, one of the first things you learn is to pick your battles. Sometimes, it just isn’t worth the drama to prove that you are correct—although there can be scenarios where it is difficult to do anything other than that. If only the angriest customers knew how to listen, maybe they would chill out a bit quicker.