Well, I just phoned ntl, and the CSP has agreed to send another technician round to check and/or replace the box.
Do you have any advice about what I should tell him/her when they turn up? As I said, the last technician put his ear to it, said "It's not that loud" and that was that. But I consider anything which keeps me awake at night to be too loud (I have quite acute hearing, and am a light sleeper, but that's not really an excuse not to replace it).
Would it be worth asking the technician if he has any silver boxes (If s/he decides to replace it)? Or if not, if I could have a Phase 3 again?
I am not a very forceful person, which is why I let the last technician walk out without replacing the box, but is there anything which is known to work when dealing with them (besides a gun to the head

)?