This was some years ago, but I still remember it quite vividly. So one evening late October mom brings home BK for me (this was before we got In-N-Out Burger, which is by far the best fast food burger place), only to immediately discover everything my mom ordered was wrong. Wrong burger, wrong sized fries, even the wrong drink. Mom thought they handed her the wrong bag, except the bag matched the receipt (which were correct). Mom calls up and politely explains what had happened (since it's not the first time BK had fucked up her order, just not so thoroughly). The manager takes down her name and says next time she comes in they'll give her two free burgers.
A few weeks later in mid-late November mom decides it's convenient to pick up BK on our way home from shopping, particularly since two free burgers will reduce the price. I hop out to order our dinner while mom swings over to Safeway at the other end of the parking lot to grab a couple remaining things for Thanksgiving, then come back and eat. So I head inside, give the girl at the register my mom's name and explain how the manager promised a couple of free burgers after their extreme goof up. Girl asks when this was and before I even finish giving the date she interrupts me to refuse, saying "That was October, this is November". I tell her that it wasn't even a month ago and that it shouldn't even matter given that the manager didn't specify we didn't have to redeem it before midnight on Halloween. Girl steps away to talk to the manager for a minute, who I assume told her to do it.
The girl returns to the register and asks what it was the manager promised. Uh, didn't he tell you two seconds ago? At any rate I tell her two regular hamburgers. The girls exact response was "Okay, one double cheeseburger." Oh hell no. I think I just found out what happened last month. I tell it's actually two regular burgers. "Right, one double cheeseburger."
Did I mention there was no trace of a foreign accent so that this was not a case of failing to understand basic English? At any rate, this goes on for over five minutes. I don't know why I didn't just ask for the manager. Eventually she finally, finally, understands two regular burgers does not mean one double cheeseburger and asks if I want anything else. I explain I'd like one of the burgers to go towards an order of medium fries. "No, that's french fries. This is hamburger." Oh for fucks sake.
I explain a second time I know the difference between fries and burgers and that I want one of the burgers to become medium fries and I will pay for the difference. Amazingly she says okay and I finish giving the rest of the order, pay, and retreat to the soda fountain, where my mom has been waiting a while. As soon as we sit down I tell her everything that just happened, and she's stunned somebody so stupid is allowed to work the register. Our order comes and I'm pleased to find she didn't give me the double cheeseburger she was insistent about giving me. I then immediately discover she gave me the child-sized fries. Mom shares her onion rings with me and we both agree she lacks the capacity to work the register.