boorna wangkiny mia - can i pick it up

Hi All

So my package address was changed to 2169 which doesn't exist instead of 2/69. I contacted Auspost many times and they said all I can do is wait but it might be sent back to the sender if i wait too long. Can i just pick it up from there? Or will it be taken to the nearest PO since the package requires a signature and the address they put in doesn't exist.