Get online support
Hi Lingg
Have you check if any NBN outage on the area,
https://community.tpg.com.au/t5/Broadband-Internet/How-to-Check-for-NBN-Network-Outage/m-p/45557#M17...
My records shows you have been contacted to our technical support department.
We will update you for the case update
Tahnks