Hi Cheryle,
If probate has been granted, then a copy of the will has been lodged with the court. Probate cannot be granted without the court having a copy of the will.
If probate has not been granted, you can write to the named executor, or the solicitor that was representing the testator (will maker), preferably in writing, and then followed up with an email or call if you prefer, requesting to see a copy of the will or to have a copy of the will mailed to you. Keep a copy of this letter request.
The estate should not have been disposed of without obtaining probate.
But are you sure that probate has been granted? You can check with the Probate Registry by calling up the Queensland Supreme Court.