When I still lived with my family there was a Mcdonalds we tended to frequent. They almost never got anything right. I think my favourite was when they somehow managed to forget to put the meat on a cheeseburger.
My mother took it back and the manager, who our family was friendly with, responded "Did you ask for them to put meat on it?". Yeah, he was a bit staggered at how often mistakes were made there, but he was especially tickled over this one. "How could they forget the meat?!"
I went to my friendly McD's last week and did drive through, I'm another one who always checks the order before I drive off, because sometimes they do mishear you through the speakers or forget things.
Anyway I pulled up to the order station which has a handy screen which shows your order and asked for a Quarter Pounder meal and an apple pie. The screen flashed up with a cheeseburger and then the person taking the order asked me to repeat it which I did. The screen still had the cheeseburger, but the guy told me to drive through.
At the first window where you paid your money I confirmed 'this is for the quarter pounder meal, correct?' and the cashier checked the screen and said 'yes'. I paid my money and drove on.
At the second window I said to the person as they handed me my drink 'This is a quarter pounder meal right?' because the amount of money I gave was less than what I usually pay, and they checked the screen and said 'Yes'
I opened the bag they handed to me and what do you know? A Cheeseburger! So I handed it back through the window and said, 'I'm sorry, but I ordered a quarter pounder meal and I confirmed my order three times. Would you mind getting me the correct burger? Cue a discussion involving the cashier who took my money, the person wearing the headset for the drive through, the worker who gave me my food and a manager all huddling around the screen arguing about how they all could have misread the order one after the other.
Upshot I got my burger (freshly made) and paid the reduced price, but I tell you what, it's no wonder their corporate mascot is a clown!!