DS1 has been doing an after-school drama class. It emerged halfway through the year that they would take an exam in this class (Lamda) although no date was given for the exam. When the date was finally announced (about three weeks before it was due to happen) it clashed with a school trip abroad that DS was going to be on. I emailed the drama teacher to say DS would be away, and to ask what arrangements were there in place for students not able to attend. No reply. I emailed again about a week before and said that I'd not heard from them; received a reply saying that they hadn't seen the first email, but thanks for letting them know. No one addressed the subject of him taking the exam on a different day and as DS is not particularly keen on drama any more and wants to stop anyway, it didn't really bother me - the main reason I had been trying to let them know was that the exam was an ensemble piece and I didn't want there to be a nightmare gap without him there.
Anyway, now I've received an email saying even though he didn't take the exam there's a fee to pay which Lamda charge anyway. AIBU to think they can shove it?