Originally Posted by
zanderblue
What an appalling way to treat a customer; right from day of flight refusal through to dealing with uncaring CS.
If it were me in that position, I'd start out with claiming for denied boarding and following up with a legal claim for breach of contract.
I also read it that, despite the earlier promise, the original flights were not refunded so all they got back were their additional flight costs and the €500. So the only compensation is the latter.
An EU261 IDB claim would be worth a go, at €400 x 10 passengers.