Hi @wuning111888, we can see that your concern has been escalated to our Engineering Team and they have lodged this to NBN Co. who has booked a technician for Tuesday, 21 January 2020, 8:00 AM - 12:00 PM to further investigate the issue.
The team is closely monitoring this and you will be contacted by the case engineer for any additional update.
We apologise for the inconvenience.
Let us know should you have further queries.
