CHANGE FEES, FARE DIFFERENCE AND MORE SCREWING CUSTOMERS!!!

JETSTAR IS AN ABSOLUTE JOKE!!! It is unbelievable how Jetstar continues to screw customers over!!! ABSOLUTELY PATHETIC!!! First they try to charge me a change fee of $330 after they cancelled my original flights and now they won't even issue a voucher for the full amount of $541.20. Then they say I also have to pay a fare difference if the flight costs more on top but they won't give me a credit if the fare difference is less. So basically Jetstar just keeps the difference in fare if it is less as a profit but then charges customers a change fee and the fare difference if it is greater after they have cancelled my flights!!! JETSTAR IS THE WORST AIRLINE IN THE WORLD!!! YOU SUCK!!!