I'm so sorry you're in this situation and hope that CSA can help you out.

In the meantime speak to Telstra, you might be able to reduce the level of plan you're on (i.e. if you're on a $40/month minimum spend plan you might be able to bring it down to $20). I've done this before for private phones and for business mobiles, sometimes they've charged me $50 for it (but that would still be cheaper than paying the extra $ each month for the next 24months) others they haven't charged at all. They might waive the change fee for you. If you have a direct debit set up then that should help assure them that you ARE going to pay you're just in a bind at the moment.

Sorry I can't help with the other stuff, just thought I'd let you know their might be an option there for you to reduce the future Telstra bills.

Hugs, and hope things start to fall in place for you.