Ignition switch not turning?

Its the ignition cylinder lock
need to have it replaced
best way to go about it is to have a locksmith replace it for you
as the can key the new cylinder to the old keys and that way no need to have the security system messed with or the other locked replaced
you can try this
its a temp fix only and not the real thing if it worked

this is what you do insert the key in the ignition and lightly tap it in with a hammer
that should get you to turn and start the engine

good luck