I recall your original post, and I believe this is very poor on the part of the QF group.
Suggestions:
(1) can you dispute the original fare with your credit card provider, on the basis that the service charged was not provided - you may have to look at credit card time limits;
(2) a fax to the CEO's office, the pros and cons of which have been discussed in a recent thread in relation to an unsatisfactory F experience; or
(3) the Small Claims Tribunal may be the next alternative. The very act of lodging a claim is bound to get QF's attention, as they are not going to want to spend time defending this.