Sky use their own backhaul from the exchange where all others use the BT Wholesale network this problem will be being investigated by BT Wholesale not Openreach as it is not an Openreach or BT Retail remit to resolve
Wholesale will be working on a fix but depending on the fix this can sometimes take some time to resolve
Ah. I wasn't aware that Sky used their own backhaul connection and apparently neither do BT online support as they stated that I must have had the issue with Sky as they all use the same backbone... That would make much more sense and almost certainly point towards that as being the issue.
My only issue now is that no-one can give me a resolution date so it is a question of do I hang on paying for an unuseable service or find a way to exit the contract. If they cannot provide a resolution date and release me from the contract I think a call to OFCOM will be in order.
It just shouldn't take this much effort and consternation to obtain a reliable service.
I know OFCOM don't deal but they provide you with details of an arbitrator and although BT may state they operate on line speed they have signed up to the voluntary code which talks about significantly reduced download speeds...