I think you have dead locks on these doors, If the key makes no difference in the lock then you will be able to pull the door pannel back far enough to get a long screwdriver on to the lock. give it a bang then retry the lock you might be lucky. If it wont release then you will have to smash it up. You need to break the bit that sticks out. Get someone outside to pull on and off the handle while you bang it. You will need two new locks afterwards.
Matt, January 2007