What time would you phone a driving instructor to inquire about lessons?
Think 11.55pm is too late? Noooooo.
When the phone rings just before midnight it has to be a family emergency not someone informing you that they are on the website and want to know the price of lessons.
Had I answered it I would have been tempted to tell them the prices are on the website, now get lost.
Still doesn't beat a text a few years ago about 3am, fortunately my mobile was down stairs and switched off.