We can only provide you with an accurate speed assessment post activation.
I believe the line is not capable of achieving the speed of up to 100Mbps.
Contributing factors to speed on NBN FTTN are definitely distance from your connected node. Hence, we provide options to shift plans or cancel if speeds are not met.
You may opt to downgrade your plan depending on the speed you can achieve.
A call back has been organised tomorrow, 02 February 2021, to further discuss your options regarding your current plan.
Feel free to let us know should you require assistance.