Originally Posted by
Vit007
In a case I do not have the money refunded within a month even with the chargeback - do I submit the complaint to CTA against Austrian (that's what the credit card statement says, and they issued the tickets) or against Lufthansa? The same question if I have to file a claim in court.

wow, I'm speechless.
You were told by Exp that you would get a refund. How about waiting for Exp to process your refund rather than contacting Austrian, doing a chargeback with your credit card, initiating complaints etc.?