Welcome to the Community!
I've located your account using your Community name and can see that there's an escalated case being handled by our Engineering team.
They've raised this case to NBN as they've identified a possible issue with the network being handled by NBN.
I've flagged this now for you and requested for a call back today from one of our Engineers to provide you their next step in resolving this issue.
Should you have a preferred contact time and number, please let us know via Private Message.