I have my own DB story. About 15 years ago I was supposed to take an overnight sleeper train from Copenhagen to Cologne. We had beds booked. It's about 22:00 and we're on the platform ready for bed.

The train arrived on time, we checked our tickets to see which coach we were on and walked down the train looking for it. We get to the end of the train, odd, we must have missed our carriage so we turn around for another pass. Then we start to notice other confused expressions.

We eventually figured out the problem: they had accidentally left the sleeper coaches in Hamburg, a full 180 miles away as the crow flies, or almost half our entire journey.

After waiting on the platform for about an hour, busses arrived to take us to Hamburg. We're now quite tired and our bed on a train is now a seat on a bus.

We finally get to Hamburg at about 3:00 the next day, walk to our beds and we're ready to collapse. Surely they're not going to come and inspect our tickets at this time?

They came and inspected our tickets at around 3:30. Two and a half hours later we were in Cologne. Yay.