Thanks for raising this with us.
While we will endeavour to make NBN Access services available to customers 24 hours a day, 7 days a week, NBN Access services are not fault free and we cannot guarantee uninterrupted service, or the speed, performance or quality of the service.
There are many factors outside of our control that may affect NBN services, such as the performance of third party suppliers and equipment, force majeure events and your hardware and software configuration.
The planned maintenance for every customer might be different as there's a lot of POI (Point Of Interconnect) for every NBN service.
You may send me a PM with your TPG username or customer ID number to look into your account for further assistance.