I went to get lunch at Subway yesterday, like I usually do, and ordered my usual sandwich. I found out when I actually sat down to eat it, though, that they'd screwed it up (pickles instead of green peppers... gah). It was too late to do anything about it, since I'd gotten the thing at the drive-thru and had gotten it back to the office already.
Today, I do the same thing. The same guy is working the window again, and the first thing he says is "Did I screw up your order yesterday?" I ended up getting lunch for free today. No complaints here!