I have suffered repeated line noise problems for well over a year. The noise is prevalent in bad weather. Recently an engineer attended and claimed to have found a fault outside and in that respect changed the exchange pair. By the time he had "found" the fault, the weather had improved. Not too long after, I had infinity installed and another engineer in the house. He told me he had thoroughly tested my internal wiring and all was OK. The weather had improved and the line was quiet, but between then and now the line went back to being noisy whenever the weather turned bad. Bet insist in wanting to come in because their specialist equipment is not and has never tested a fault. It does not take an Einstein to link the weather to the fault and determine the problem is outside and the Bt people I have dealt with are sadly well away from intelligent. I was an engineer for 23years and a bl***y good one and where this sort of problem occurred, I/we changed the connection from the exchange right through to the customer premises. Do we need to go back in time to a period when people like me cared.