Being a waitress

Those sorts of people do exist- but that’s not necessarily the case. Imagine you’re out to dinner, you paid for something, it’s not right. You (hopefully politely) ask the server to correct it. They go in back, replate the same thing, and return. At this point- you may still feel it is wrong but just say it’s better because you don’t want to ask them to do it twice- out of social anxiety or out of the fact that you are over it and just want to eat before your meal gets cold or you take time from your party who are waiting on your food to arrive. Maybe you figure that if they “messed it up twice” a third try won’t be better so you are trying not to be unnecessarily difficult. Or maybe you noticed or suspect they replated it, don’t want to make a scene or accuse them (especially without solid proof), and figure if you send it back again, someone who cares so little about the effort to remake it may do something petty to your meal, so you live with it. It’s all a matter of perspective.

Though, if you do send it back because it isn't what you expected, wouldn't you at least be specific about what that thing was? Just saying that "it wasn't made correctly" is vague as hell. They're more than likely to make the same mistake again, if they bother to, rather than replating it.

I would agree with you that “it wasn’t made correctly” isn’t very helpful. But to be fair, some people aren’t very smart, or lack the skill or ability to identify or articulate the complaint. If anything the example you mention could equally support a person who meant well and then just agreed not to be a pain- because they realized after the fact that the description was vague, and either couldn’t give a better one, or figured they had done their best twice so that was what a milkshake was there and best not to be a jerk about it. In that case counter to the point they were a “bitch” but in fact were trying to be polite but assert themselves. So as you say, it could go either way, and well intentioned people aren’t always the best communicators, something that can be worked on, but not always a sign they are jerks or idiots, or deserving of hostility.