Tried to cancel a reservation within 24 hours as advertised on their own site. Got the run around on 5 separate support calls where the reason they couldn't cancel changed multiple times before settling on "Qantas is charging a fee, it's not us". I call Qantas twice to confirm that they in fact do *not* charge such a fee, even getting a number from Qantas to give to FlightNetwork so they can confirm it. FlightNetwork adamantly refuses that the Qantas representative told them something completely different and refuses to honor their 24 hour cancellation policy.
Booking from here is a risk. Their prices are admittedly low, but if a single thing goes wrong prepare for them to give you the run around and at some point, outright lie.