Expiring eligibility letter, ungranted request for extension no school yet.

My eligibility is expiring soon.. mid this year.. I was able to apply and given a temporary offer letter from la trobe uni but it's for the intake that will open a month just before my eligibility expires, so the school is requiring me to get an extension from ahpra inorder to enroll, unfortunately my case officer wouldn't allow.. I just received an email that the intake is filled.. i have tried unisa but their application is closing this january.. please help me.. tell me what to do please..