Yes I have the same problem. I was with these people back in 2005. I use a dongle for emails and the like. I had everything set-up working beautifully. Guess what, suddenly without prior notice their whole system changed. Could'nt get in, could'nt check my usage. I paid up and left them. I have recently come back. Now same problem.
If you know what is right for you - Don't come back here. Stupidity reigns supreme with this company. But hey, most Australian internet companies have problems, Just go to their chat sites, Optus, Telstra all of them. Does any body know of a internet provider that is not Australian. Please let me know, as I am about to get rid of all internet in my flat. My phone will do - it is with a foreign provider.