..... replaced everything from here to the exchange....
Someone's telling you porkies. They probably did a pair swap and you've ended up running via the same bad, as Bert pointed out, cable joint.
Could this bad cable joint be anywhere in the 4-5km distance I am from the exchange then? I suspect porkies are going on because according to xilo they have already done a lift and shift but neither engineer whos been out said they were doing that, the first one was refused it and the second one certainly didnt mention it, just checked the exchange then phoned back to say he couldnt see anything wrong there. and the 3rd visit (the same guy as first) wasn't sure phoned to ask if he could do one and they refused him saying it was definetly rein as it always starts at 9am (which isnt even close to the truth anyway!! 3am last night, it went down for example), plus the ringing problem will happen at will WHATEVER time of day or night it is!
They also said they couldnt do a lift and shift without phoning xilo and getting their permission so it seems odd to me xilo only found out about the lift and shift through bt's notes unless I'm missing something.
Anyway no phone support from xilo as its the weekend so i've wasted half the day yesterday and half the day today with no idea whats going on, I need to go out this afternoon to get a fathers day present (late i know) and no idea if i'm still supposed to be expecting a bt visit or not! I cant speak to bt directly and am in the middle of this whole mess, and worst of all I'd be expected to pay what £600 now for 3 visits amounting to nothing?!