Extracting your super is a pain in the arse; they really don't like you doing it, however if you genuinely in financial distress, it is possible. For the most part, you have to prove you are skint, or dying. Regarding the brick walls, are you getting consistent replies, or does the information vary every time you try? If there are inconsistencies, you can be pretty sure that you are being given the run-around. Take notes and keep records of who you spoke to and what they told you.
Persistence is the only way. Keep harping. I managed to release $10K of mine during treatment a few years ago, but not until I'd been on the dole for 6 months. If you haven't registered for benefits, bite the bullet and do it this afternoon.
I'm not sure if the changes to the rules which were made last year regarding super access are still in place. That's a very specific question that you need to ask your fund.
Also, check if you have any income protection attached to your policy.