Several of my friends are lecturers. One of them has a lot more patience than I have with the type of student who thinks that the University owes them everything to do with their studies with no responsibility on their part. Fortunately this type of student is rare.
Anyway there was this student, who made an appointment with my lecturer friend. He failed to turn up (he overslept), thus wasting my friend's time.
So he made another appointment with my friend. Once again, he overslept and failed to turn up.
So he made a third appointment. He missed this one as well. This time it wasn't his fault, the bus was late, but my friend's time was wasted all the same.
So he emailed yet again, trying to set up a meeting for the fourth time. My friend didn't respond immediately. After a week, he emailed again to say that my friend was being rude by not replying.
I fear he has much to learn about politeness...