[eertami]

I've had plenty of success using the EU regulators to enforce 261/2004 compensation requests if an airline is not following the rules.

It can take a while for the regulator to get to your case, but it is only a 10-15 minute investment to find the relevant authority and to email to them with your information/circumstances. Then 2-4 months later the airline follows up to arrange payment. With budget flights the compensation can end up paying for multiple future flights.