Picked up my 95 300E Diesel today from a body shop for touch up repainting of the front passenger door and I noticed that the door lock will not push down on the front passenger door, nor will the key cylinder in that door move it or any of the other locks (the key cylinder moves left to right but no locks move). The drivers side door locks all the doors expect the front passenger side.

Obviously the body shop messed something up; is this a simple fix that I should take back to the body shop or should I bring it to the dealer or an MB guru to prevent further damage?