sky channels missing?

Scandy has been happily watching certain channels (thankfully BBC for footy!) for a good few days now after earlier technical probs, but I am having problems with getting both pics and audio for certain channels (sky sports/sky movies/sky1). I have spoken to sky on a number of occasions now but they have failed to do anything that works (some may say 'no surprise there') and are now recommending that I get an engineer out. As I am not convinced that I can get a sky engineer to come to the middle of the mountains in Norway, I was wondering if anybody has any suggestions???? Could things like altering polarization help??