OP here. It wasn't a mistake, I was getting ready and they said they were leaving. I told them to wait, and they said they wouldn't, as they were already late. Ordinarily I am very punctual, to the point of being early everywhere. I wasn't that day, because the time had been moved, and nobody told me. Originally it was going to be at 6:00 pm, and they moved it to 3:00 pm. They didn't wake me until 2, and didn't tell me that it had been changed until they were saying to hurry up a few minutes before. I was asleep because in addition to being a substitute, I work at Toys R Us, so even though I'm off for one job, the other is stronger than ever. The days leading up to it I had worked two fifteen hour days, then the night before an eight hour one, where I got out around 1:30 am. My dad came back after 15 minutes, so it ended up working out alright, but I was mad as hell.