[vokep]

I honestly consider it a virtue to complain in such a situation. It might seem like it has negative consequences, but the reason I went to the restaurant and not another is because of an expectation they'll do their job as advertised. Bringing the wrong food is doing their job wrong, and letting it slide is indicating that that's ok. It isn't a big deal that has any major meaningful consequence usually, but just because its a small thing doesn't mean its ok. However I agree in not being too frustrated. If I got a wrong order and the restaurant refused to correct it, I'd try to enjoy whatever I got and then plan on that being the last time I visit that place.