I was supposed to travel along with my family on 15 june 2019 from delhi to seoul by ai 310. We were made sit in the flight till 3am and then made transfer to other aircraft saying its a technical error, then till6am in the morning we were in other aircraft and finally announced for flight cancelled in the morning.in the after we were told the flight will leave at 330pm for seoul via hongkong. At 2330 hrs the flight reach hongkong and the seoul passengers were told to get down for 10 min so that the flight can be clean. By lying us we were made get down at hongkong airport. There a staff came and said the flight will leave in the morning at 08am and we need to wait the entire night at the airport without water food blankets anything. It was a night mare was everyone. Our entire trip to seoul of 2 nights gone in vain. Onward flight of jeju airlines which we booked for japan we requested the airport staff of seoul to help to postpone without any charges but he gave wrong promise and didnt help. All hotel, tours. Transfers onward ticket all moeny waste with high level harrassment by airlines.