I've been trying to get this fixed for my mum and dad for over 6 months with absolutely no result. Phoning has been useless, online chat has been useless - people who are following a decision tree of responses when actually we need an engineer - BT SORT IT OUT!!!!!!
Thank you for posting. I can understand your frustration, I'm sorry it's taken so long to get your parents line repaired.
I'd like to help you get the service repaired. I've sent you a PM with instructions on how to contact me. Once I have your details I'll take a look at what is happening with the fault and contact you directly.