Originally Posted by
snic
Miles tickets are no different. The OP ended up in an economy seat, but paid business class miles. The carrier that issued the ticket should refund the difference in miles, whether it was their fault, the operating carrier's fault, or the weather's fault.
And a
pony?
Airlines don't have to compensate passengers for factors out of their control (they might choose to for customer service purposes; it helps if the customer has one of those "I'm very important" shiny cards). But good luck with arguing with the Contract of Carriage.
I would pursue with LH, the EU regulations should help. That being said, it may take some time and effort to get compensation.