This drove me nuts when I worked retail, like at the pizza shop - we ran out of medium boxes one day, so we were putting all of the medium pizzas in large boxes & labeling them with a "sorry we ran out of medium boxes" note. One lady comes back in 10 minutes lady fuming that her pizza didn't fit in the box. I pointed out the note and apologized that we had run out of the medium box size (like it mattered?? the pizza was still the same size, just with an extra few inches of space in the box!) but she threw a FIT. I finally offered her the pizza for free just to make her happy & get her out of the store, or even to make her a large pizza to fit in the box at no additional cost, but she was so mad that she just wanted her money back. I refunded her & she left without dinner in a huff. Even the other customers were cracking up at that point, haha. The employees enjoyed eating the free leftover pizza