Indigo Airlines — Flight services

I booked a return flight from Dublin - Kolkata - Dublin. I paid 1120 Eur for the same. There was no food and drinks. I was not aware that I will not get any food or in flight entertainment in an international flight. When I asked a staff they said they are low cost airline and they don't provide any services. But they charged me huge money for the flight. If I paid Eur 600 for the flight I would have not complained. Emirates and other similar airlines are charging same as them but they provide amazing services and in flight entertainment. On top of that flight was dirty and chaotic. It was my worst experience ever.