As you know, this site is dedicated to fighting the Wikileaks Blockade. Various avenues have been unsuccessful so far so it’s time to try the Reserve Bank of Australia.
They regulated finance systems in Australia so they likely have the power to force MasterCard, Visa, American Express etc to provide this service to us, the consumers.
I implore you to email them, send them a letter or call them. I’ve spoken to them and they are really helpful.
Their contact details are here:
Thanks @Spider_Sheep for tweeting their details.
If we all do our part, we CAN overturn this!