Welcome to the Community!
For customers experiencing any issues with their ADSL/NBN service, we recommend the best thing to do first is check if there's an outage on the ADSL/NBN network.
If there are no known outages in your area, customers can proceed with the troubleshooting steps indicated on this link: https://www.tpg.com.au/support.
Feel free to search Community for help with your issue, or contact us and we'd be glad to assist you. Just send your TPG account details (Username/Customer ID) via PM.