I was flying from Amsterdam (Schipol Airport) to Malaga on Easy Jet and had to change planes in London. I am an Indian Citizen but have a Dutch Residence permit. I was not allowed to board the aircraft from Schipol to London by EasyJet because I do not have a UK entry visa. This was very surprising because I would only change flights in London, hence requiring only a transit visa and I am exempt from requiring a transit visa since I have a Dutch Residence permit see this link to the UK visa requirements. I was also allowed to pass through immigration in Schipol for this particular flight with just my passport and residence permit - I was not stopped by the immigration officer for not having a UK entry visa. However, the employees of EasyJet did not let me enter the flight when it was time for boarding.
Both my passport and residence permit were valid for more than 6 months at the time of the flight. What can I do about this situation?