We were caught up in the air traffic control mess in the summer. I know we aren't entitled to compensation but we are entitled to a refund of reasonable expenses for refreshments. The airline has responded saying we are not entitled to compensation but have ignored my follow up emails clarifying we don't want compensation, we want to be reimbursed for refreshments. (Delay meant we missed dinner at home so had to eat at the airport). Airline is not a member of a dispute resolution organisation.
What is the next step please and how likely are we to receive our money back?