Line Grade D! Very High Latency Slow! Pay R900pm

We had 10mbps line at old address paying R900pm for it. Moved to new address only get 2.75mbps download speed still paying R900pm that is fine in a 2 year contract, but my big issue is that my line grade is now the worst rated at a grade D - high latency and high jitter!<br> <br> If you cant give me my 10mbps at least give me a decent line grade. Log faults and they automatically close with the creation of the fault.<br> <br> Cable from my phone to the box is brand new so fix the street box cable (replace ancient copper wire) or check my port at the exchange so i can atleast have a decent line grade if im to sit with 2.7mbps line speed.