cctv security?

A neighbour has put up security cameras and one in particular is objectionable and her answer was on first contact 'see a layer' he said we can shield them to stop overlooking. So there is no arguing about having to re-wire it can a camera cable be extended with the joint being inside the attic? it needs to be moved around 6ft to the rear roof apex facia to enable angling and shielding to stop overlooking our sun room and visitor parking and me also I might be getting in my car scratching somewhere I don't want people to see. Additionally what can I do if they won't move it?