Ignition key will not rotate.

I have seen this happen on several brands of cars, and I have had to repalce the steering column lock assembly. Sometimes the lock breaks internally and it cannot be repaired. See if KIA has a recall for that item. Have you used up your general warranty? If nothjing works then you must replace steering column lock assembly.

for future reference, smack it with a dead blow hammer gently,works every time!!