This morning on the way in to work I "invested" in two Egg McMuffins, but when I checked the bag I had only gotten one.
After waiting three hours, the girl at the window finally told me a big convoluted story about the history of McDonalds corporation, and about their challenges in procuring Canadian Bacon. She also told me "most" people get their money back in situations such as these, but she couldn't help me because her drawer was low on $1 bills and quarters.