Visa Grant letter (Adelaide)

Hi
i am writing this with a heavy heart , i had applied for state nomination Protected content for South Australia, after completing all the formalities over a period of time ,lodging EOI and submitting medicals and PCC etc, my agent told me to pay landing levy and expect the visa grant letter and the receipt for the payment anytym. Exactly after two months he is telling me that there is a problem and that "my file has been removed from the database of skill select". I am completely clueless right now as niether did i get any payment receipt nor Grant Letter . Please advice .