DS had 6th birthday party at climbing wall/adventure park. Invited 8 friends, had to pay upfront for all guests.
DS invited good friend from school who we've had round for playdates/tea. His mum accepted invite (after chasing!!) and texted a couple of times about it the week before party.
On the day friend doesn't show..... texted friends mum to see if they were on their way..... reply was that they weren't coming as the friend had gone out for the day with another friend!!!
Aibu to think this is really rude??? DS had wanted to invite another out of school friend but couldn't as we were already full on numbers.
Don't understand why the mum just didn't let me know they weren't coming??!!!!