Surprised you even got 2 x $50 ($100). You have no hope of getting any consquentail loss's from the delay. Thats what Travel insurance if for.
What did the ticket cost?
"arrived from Tullamarine and took off at 1:30 p.m. with its originally booked passengers and not the delayed passengers" No arline would do any different. Otherwise 2 loads of passenger would be disrupted.