Before attempting the troubleshooting steps, we recommend that you do the following below.
If you are still unable to connect to the Internet, you can proceed with the troubleshooting steps indicated on this link: https://www.tpg.com.au/support/problems_connect_internet.php
In your case, our Engineers verified that there's a fault within the copper network and raised it with Telstra, however, it appears that there's a network outage in the area. Telstra have indicated they will aim to restore service by 28/03/2020.
Further updates will be given by your assigned Engineer via SMS or phone call once an update becomes available.