I tried again to have the issue escalated, and find out what Telstra's plans to rectify the issue are, however I was told yet again to reboot my modem, and that there is no outage in the area so I must need a technician to check my connection , again!!
As far as I can tell there is only one other place to lodge a compaint, and that is the Telecommunications Industry Ombudsman.
If anyone else out there is haveing the same issues on the Castle Hill Exchange, please lodge a complaint here:
It only took me 5 minutes - if enough of us make some noise, maybe we will get some action, or at least money back from Telstra?