I realise your moving to Sky but I am a bit puzzled by your comment-----quote="after doing all the checks advised". I take it you were told to remove the front cover of the master socket and plug a phone in there .If so what was the outcome of that? Because that would eliminate all the internal wiring and extensions. So if the engineer found a fault in the XTN wiring and you were charged[quite rightly] as that wiring belong to you. Why werent you told that the line was okay to the master socket ?? If you had been told that the you would have realised that the fault was in the internal wiring and you would NOT be surprised to be charged for fixing it.STRANGE??