Electric Window Switches Dont Operate Windows

hi, we have a skoda superb mk2 which is being used as a taxi but wont be for much longer as the window operation switches dont work the windows. at first the whole passenger side electrics had failed (puddle lights, indicators, elec mirrors, door locking & window switches) so we decided to replace the wirring between the doors and door pillers as being used for a taxi, the cables had become brittle and snapped. 6 months down the line everything was working like a dream until the windows had stopped operating. as it stands with the switches and what operates: o/s drivers operates drivers, n/s front and n/s rear but not o/s rear windows. o/s front works solely but o/s & n/s do not work solely on there own. all wirring has been checked from all doors to pillar but from then on is beyond our capabilty without any helpful advice. colin.