I privately teach German and have acouple who should come every week. Last week they cancelled at 10 minutes notice; the time before only one turned up and was really not interested and tonight he tunred up alone again and asked me to translate a letter for him before we started then afterwards said he couldn't concentrate and then left. They neer do their homework, which means I can't progress from one week to the next with them, and then they complain they aren't getting anywhere. My issue is that I have to prepare for each lesson, which takes between 1-2 hours, and so that time is lost, but also, if I knew they weren't interested tonight I could have sat down with Dh and had a nice evening, rather than bolting supper so we were cleared up in time for the students.