Looks like you and I are suffering from the same problem. Have a look at my thread
http://forums.thinkbroadband.com/fibre/t/4526743-lon...
According to AndyHCZ 3 cabinets connecting to the headend exchange at Hereford have a problem, he said one is at Pontrilas but that is very close to Wormbridge, I am on Trumpet exchange and ordered FTTC with PlusNet on 21st November last year when it said it was available and have got nowhere since then.
BT wholesale have promised a fix in December then January but just keep putting back the review date. I was hopeful that something was about to happen on the 14th Feb, there are some roadworks scheduled just outside the Hereford exchange in Breinton Road but the description is vague "access required to underground structure to restore service" which doesn't tell us much.
I have received an update from Plusnet that the next review date is the 27th Feb, the guy dealing with my ticket repeatedly tells BT that the timescales given are unacceptable but it does not seem to have any effect. I don't like the sound of a 9 week delay, I've been waiting over 11 weeks already!