Please have a look my case. I don't have home internet since this Monday. No any connection and the light is just flashing. Rarely it is connected, but dropped very soon.
Please contact me via my mobile in my account "XXXXXX".
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 found a fault within the copper network, which they've raised with Telstra. Their attending technician restored your service after fixing the external faulty cable.