Thinking of flying Vietnamese Airlines?

I flew from Can Tho to Con Dao, no problems, so I wasn’t prepared for my next ordeal. I was booked on a 13.20 flight from the island to Ho Chi Minh City but the flight was “delayed.” After over an hour, no one could tell me when the flight might be underway because of “technical difficulties” so I rebooked on a 17:00 flight.