A question to those located here in NL, does anyone have any personal (positive) experience with any of the various online delay compensation claim services? Putting my details in a couple of them they say I could be entitled to up to €400 x 2. I have already claimed with the airline and had a letter back denying eligibility due to the technical problem being a 'factory fault' and not down to airline maintenance.

Any advice or tips would be much appreciated.