Hmm in that case check the vac hose is on the lock, if the lock turns and it locks the car then it can only indicate a busted door catch...
COmmon fault is when you turn the key it does nothing and like i say the paddle bits break on the back, but as yours lock's but don't do any thing else i would say a bust door catch...
Remove the door card and oil the lock and catch from the inside with plenty of wd40, work the lock at the same time to try and free it off... Failing that get a second hand lock form scrappys....
