If there is no legally valid reason for them doing this, then read on...
Quotetook my binders, my Mens deodorant and went out and bought me a wardrobe full of women's clothes to prove a point.
&
Quotemother walks into the unit I'm temporarily living in and says open the door I'm going to wash your back
You said you don't currently live with them. Change all your locks and don't give them any of the keys. If you have roommates, ask them not to let your parents in. Also, if you've got all the womens clothes in your apt right now, see if there's gals you know that would be interested in them or give them to a charity.
Quotemore yelling about how if i ever have a child that the man i will be with wont stay because i wont make a good wife.
She's right, at least partially. You, a man, _would_ make a terrible wife. You'd be better off being a husband.

Quotehow difficult it is for me to get anywhere let alone out of the house without being paranoid that my parents are going to jump out from behind a bush and yell at me..has happened before.
Sounds like stalking to me, something Aus prolly has laws for.
Quotethey threatened my Dr, keep an eye on my money, passwords, bank accounts,
Change all your passwords if you can, and don't tell them the new ones. See if it's possible to get their names _off_ the authorization list for accessing your banking info.
Quotehave all my legal documents which they wont give to me unless i have a valid reason.
Do you need an official reason to have your parents give you paperwork that's about you?
Quotethey have contacts in the police who give me hell for making such good parents worry when i dint answer the phone a police car comes to my place and i get yelled at by the cops.
Possible abuse of power, see other post that mentions it in this thread.
Quotei cant get a Dr in this town without my parents interfering and putting in their word of how to treat me
How do they figure out which doctor you're talking to?
Also, block their phone numbers from calling or texting them or get a new # and ask people in your life who know them not to pass the number on to them.
Good luck with the job hunt!