Nusiance call: 3 times this morning, so far. Reason: Save on energy costs and clear damp caused by old loft insulation. Sounds like a recording with gaps for your answers - Doesn't listen! 'My loft is boarded.'; 'I don't have any damp in my loft.' ; 'I'm happy with my current set up.'; 'I'm not interested.' etc.............. Put the phone down!!!!! Is linked to series of numbers from Manchester. Use a call blocker, if you have one.