They people there do not pay attention the amount of cash you give them. My total was 18 and some change. I gave the carhop person 28 and the correct amount of change so that I could get 10 dollars back but I didn't get anything back but ketchup. I didn't realize until I left the joint and had to drive back. I knew it was going to be hard to prove but it's 10 dollars... They gave me my change and also rude customer service . The carhop person was also too busy flirting to notice that I gave her a 20 rather than a 10!