So are you picking the kids up early so you can do your lessons from 4:30 then?
Also this £150 you 'lost' – surely if someone needs x amount of driving lessons from you to pass a test the fact that they miss one lesson on week y still means they need x amount of lessons, so you still get the £150 at some point. Unless they of course went elsewhere for this weeks lesson, however understandable that is it's unlikely.
Exactly aracer I enjoy exposing his ill thought through nonsense posts.