We have experienced something that no one should experience when flying long haul flights. We booked flights from Helsinki to Bangkok and back from Norwegian and they failed in almost every step of the way. Our first leg from Helsinki to Oslo was ok but then the troubles started. The long haul aircraft from Oslo to Bangkok was broken before it even took off causing a 24 hour delay on the flight depature. Norwegian staff gave announcements only in Norwegian until us "foreigners" demanded to hear them also in English. They arranged us a crappy airport hotel for the wait (and 4 hour sleep) and made us come to the Oslo airport at 5 am just to see that there has been another delay. No text messages or emails whatsover to inform us. Eventually we were flown to Stockholm to board a new aircraft.
The return trip was even worse. The aircraft broke down AGAIN before takeoff and set us for another long wait and another night in airport hotel. The staff was absent and notifications were made only by hand written pieces of paper taped on the gate. The food voucher we got was only valid at Burger King from dozens of restaurants available. Again, Norwegian staff was absent during our wait at the hotel. Information was given by the front desk by two printed sheets of paper. We were given one free 3 minute telephone call which was nowhere near enough to call to Norwegian customer service TO NORWAY. Eventually we ended up getting an over 900 baht bill for calling them. The customer service couldn't help us to get a flight to get back home to Helsinki after 24 hour wait in Bangkok. Two different persons took our phone number and promised to call back but they never did. Basically they left us in Bangkok without a flight back home.
Fortunately there were seats available in one Finnair flight for us to get in and after paying 46000 baht we are finally on our way back home.
This has been a very expensive and nighmarish lesson to learn NOT TO USE NORWEGIAN EVER AGAIN. After they have your money you are on your own. No help, no service, no information, no nothing.