That dr was very rude, what you needed to ask for is an EPC (enhanced primary care) plan. As Feeb mentioned, you then get 5 sessions at nominated specialists, this can be at a reduced rate or some are free.

i had one for my DS. 1 session was for audiology (free) and 4 went on speech (reduced rate). I also had one for DD1 and used 5 on OT (reduced rate per session)