Hi Beckio,
I'm really sorry for your reduced broadband speeds. I can see that you've been advised of a fault when calling in (ref: F004916582 ). The peak time slow speeds problem will be corrected when the planned network upgrade is completed. But we need to allow the pre-upgrade work to complete first, and that will be reviewed early next month.
In the meantime I'll refer you to a team who will provide updates and advice on what credit you are eligible for.
Sorry about this though and hope we have some good news for you before too long.