We had to buy a new ticket after an air traffic control outage but the airline is giving endless excuses for not repaying us

The day before my easyJet flight to Budapest last July, a UK air traffic control outage caused significant disruption at Gatwick.

On my arrival at the airport check-in, easyJet staff refused to issue me with a boarding pass because a smaller aircraft, with fewer seats, had had to be substituted. This left 35 passengers unable to board.

I was advised to book another flight and claim the cost of the new ticket via the easyJet website. The next available flight was with British Airways and cost me £472. EasyJet has since refused to refund me.

Customer service staff first denied that the plane had been downgraded, then said my claim was rejected because I had booked the original easyJet flight through a third party, then said I was a no-show.