Made ineligible to work

I’ve been here 50 years and suddenly due to a government database omission I’m no longer eligble to work.

I came to Australia when I was four and granted Permanent Residency on entry to Australia in 1969.

I have been working at my Casual job for two years where they give me working hours where I can barely pay my rent and bills. Yesterday I was stood down from my job at 1.5 hours notice because my employer cannot find me on the government system. I have provided the documentation that I have but they would not accept it. I don’t know how long it will take to fix and it still could cost me a lot of money I don’t have but I am not able to fix this without help to get my working rights sorted.

Please help me as I just don’t know what I’m going to do.