Thanks for the info everyone. Yes I felt discriminated against, I was super angry. He knew everthing Id gotten from the medical centre doctors and bombarded me with it, reading out dates and amounts. Then he told me to go and get some counselling.
It wasnt a case of me deliberately seeing different GP's it was just that the medical centre has 5 doctors and my original guy wasnt always available so Id see whoever was available. I looked into making a formal complaint as I beleive I wasnt treated with dignity and respect. The department in NSW that handles complaints against doctors said the worst that would happen is he would recieve a letter informing me of my complaint.