Welcome to the Community!
Thanks for raising this with us. I'm sorry about the service disruptions that you're experiencing.
Our tests show a possible line fault that needs to be raised to NBNCo for repair. I have escalated this issue to our Engineering Team for investigation. You will be provided updates via SMS or phone call by our Engineers. Should you have further questions or concerns, do leave us a comment.
We already responded to your concern on this thread: https://community.tpg.com.au/t5/Broadband-Internet/No-internet-for-3-days-and-persistent-internet-dr...
As discussed, your case has been raised to our Engineering Team as well.