My starter won't stop starting, and my key doesnt stop it

Check the wires at the starter, and inspect the wires at the starter solenoid for any damage or missing wire insulation allowing the wires to make contact with each other or ground, and check the wire to the "S" terminal on the starter solenoid to be sure that it is not touching the main battery cable at the "Bat" or main terminal on the starter solenoid.

If there is no problem with the wires to the starter solenoid, especially the wire to the "S" terminal on the starter solenoid, and there is no after-market alarm installed with a starter enable, then the problem will be with the ignition switch.