For customers experiencing any issues with their TPG service, we recommend the best thing to do first is check if there's an outage on the network.
Our Service status page is updated with any reported outage with our service.
We've created an article that will guide you in Troubleshooting no internet connection.
In your case, it appears that your service was restored and has been stable for more than 4 days now. If you need further assistance, please let us know.