After your previous update about USCIS' reopening the case, with your husband back in Oz, I was suspicious that this was not going to go well 🙁I have no advice to offer and only suggest that you do exactly what @Crazy Cat suggests.
USCIS has done you such a disservice, trying to do this without an experienced immigration lawyer may hinder your case even more, if that can even be possible, considering what has already happened to you and your family.
Hoping the best for you and your family!