Did you get this fixed in the end? I had a similar problem where i knew for a fact my windows worked but didn't budge with the switches. Turned out fuse 14 was blown to bits and that solved it. There is also a thermal fuse for the windows right at the top of the fuse box (you'll need to drop the fuse box down, it had a green top on mine in an aluminium casing), swap it out with a regular fuse and try it then to check that isnt stopping the motors turning.