The Jet star website is disgusting. It is clearly designed to charge you as much money as possible , and create confusion. The lowest price is advertised, but all the "options" are automatically selected. All options have to be deselected. When a process does not work, the page reloads with all your "options" reselected.
When you realise your mistake- you call Jetstar and their delightful Filipinos tell you to get lost.
When you want to write a written complaint, you realise you are only chatting to yet another third country national, and your conversation is not being recorded. There is no written record that you can keep.
When you tell them that you have been cheated, and an instant refund within 5 minutes of the transaction should be instigated, the delightful Filipinos tell you to get lost.
I had numerous other IT issues that required a call to the delightful Filipinos. They solved nothing. I have been to the Philippines so many times and love the nation, and by the end of the day, due to my Jetstar experience I was swearing never to go back to the Philippines,
The answer is simple. Don't fly Jetstar.