went to the car today unlocked it & the rear pass door wont open no matter what i try.. anybody no how i can get the door open.. i have even managed to get the inner door panel off from inside but still cant find any way to undo the door can anybody please help.

Cant remember if you said the door pin went up and down or not? If it doesnt then pull the rubber conduit back on the drivers door where it comes through the car body and check its all plugged in. Did the bodyshop have the doors completely off on the front? If that looks fine then its possibly the bowden cable in the rear door. Get the small plastic cover off the rear handle bit to reveal the cable to adjust it. Have you tried using the key in the drivers door aswell?

Info here

http://www.briskoda.net/forums/topic/113882-removing-a-door-handle-fabia-and-octavia/page__hl__+door%20+handle#entry1428639