I contacted the support team, it has been escalated to some level 2 engineer or something.
They were supposed to contact me back today but I'm still looking to hear from them :/
And meanwhile still experiencing bad speed.
There are different cause of Transfer/Speed Issue that you may experience.
In the event that you experience dropouts via Wireless/Wi-Fi connection we did an article that you may find helpful see links below.
We have created this article that can guide you on How to Check for NBN Network Outage
In your case we've seen that the issue has been escalated and now handle by our Engineering Team. It is still under assessment usually takes 24-48hrs, updates will be provided when it becomes available via SMS or Phone call.
Having no connection is a different from having slow connection.
If there are no known outages in your area you may perform basic troubleshooting, we did an article that you may find helpful see this link below.
In this particular case, there was a known issue in NBN Co's network causing the service not to work. The issue was escalated by our Engineering Team and they will arrange a TPG Technician visit to check your connection further updates will be provided via SMS or Phone call.
I have tried to resolve this through online chat but got passed from person to person and then they just stopped responding. I have been unable to work from home today which is not acceptible. Not happy!!