Seems it is too late already... But do you have an experience dealing with Jetstar and particularly - Jetstar flying to/from Vietnam?

I had a flight scheduled with them - Singapore->Ho Chi Minh->Haphong. All in one itinerary. So they moved HMC-Haiphong leg before the departure of Singapore-HMC leg without notifying me.

I accidently discovered this when I logged on about a week before the departure of the flight. And after calling them, I had to prove them that it was not me who made changes.

At the end they told me that they will issue refund in vouchers and they could not accommodate me in the originally booked flights. When I asked to speak with supervisor, I was told that nobody is available and hanged up. Had to purchase new ticket with Vietnam Airlines and I am stuck with their vouchers.

So... you've been warned.