I've been trying to buy a $40 pre-paid sim using paypal but am not having any luck. After putting in paypal details the site takes me back to boost and it sits there and does nothing. I've checked my paypal and no transaction has been processed. Not a good first impression.
There isn't any staff generally who monitor the forums here, so your best bet would likely be to chat with the LiveChat team and see if they can help you out or at least get it escalated to have it resolved. http://livechat.boost.com.au/