I had this happen to two of my friends cars and this is what I did:
From inside door handle remove screw and slide plastic piece thats behind the handle forward. This will allow you to pull plastic piece off. Then take a pair of needle nose pliers and grip the metal rod that attaches to the chrome handle,hold tight, and pull forward towards front of car-NOT TOWARDS YOU! Not too hard, but a decent tug and while you do this lean/push on the door. Door should open and then switch child safety lock off(may need to remove rubber cover and tug a little bit). Afterwards just put everything back together. I've done this same method on three doors so far and it worked everytime. Hope this helps!
