Had a family dinner (14 of us) at a well known restaurant. I ordered the Chilean Sea Bass. They brought me a swordfish. I called the server over and then he got the manager and they both insisted it was sea bass. I have had hundreds of sea bass and didn't even have to taste it as it is a completely different cut and look. All the other sea bass at the table were big thick fillets which is how sea bass is cut. Mine was the flat pale looking swordfish with the blood stain on the end and the lane of fat on the end. I know my way around a fish as I have operated seafood restaurants.
I did lose my temper when the manager tried to make me look bad and I let loose with a few good insults. My family still jokes about it every time we are together as they had never seen me lose my temper.
I steadfastly refused to accept the fish and deducted it from the bill when I paid as the manager wouldn't remove it. He did bring a free desert.
While I think Dan does create his own problems many times, I can see where you can be pushed beyond your usual limits as I was in that instance. Ordinarily, I just blow those kind of things off. But the manager was an ass and got me going.