What Would Cause My Car to Not Turn Off? Disengaging Neg Battery & Pulling Fuse

Thank You For Responding. No. Not Really. If the Driver's Door is Open (9/10 times) When I Put the Fuse In.....a Dinging (key left in ignition cylinder indicator) Starts. I Shod Mention That Before I Replaced the Ignition Cylinder the First Time, the Wing Part Had a Lot of Play and Would Spin Freely to Where I. Had to Jiggle the Key Back and Forth to Get the Key Out. Which Often Times Would Cause That Same Dinging When I Would Open the Door to Get Out. Do You Think That It Is Possible That Some Part Broke Off In the Actuator? I Had a Friend Look At It and He Told Me That I Need to Replace the Entire Steering Column. Can't I Just Switch Out The Ignition Cylinder LOCK ASSEMBLY HOUSING CaSING or Whatever It Is Called? Thank You For Your Time and Correspondence on This Matter. :)

Remove and inspect lock cyl to see if tab on back side has broken off... IF not... Get some hands-on help!