OZZI that is truly scary I just checked my logbook and I have twelve all up ranging from a couple of farm strips to Class Cs with surface movement controllers, heavy jet traffic etc etc. It isn't your fault mate but you are right to be doing something about it. All the more reason to avoid VH-BCY!
Perhaps someone will have a better idea than me about what you should do but I would be asking for further training from the school to cover the sequences you are not happy with for FREE. (Not too sure how far you'll get with this!) Or maybe going somewhere else for more training at your expense.
Anyway mate you sound as though you have a few clues so I'm sure you'll get it sorted but I would definitely be approaching the school first and complaining long and loud. (Cue red faced man tearing into CFI and beating fist on reception desk in front of prospective students!)
The Comet.