This is a 'can do' job in the driveway but takes patience. You will need either a dremel/hobby rotary tool with a cutting disc or a hacksaw blade. Get the column cover off and cut slots into the security bolts holding the ignition switch clasp onto the column shaft until you can get a screwdriver into the slots. Due to these bolts being a 'shear off' head design they can't put a lot of torque onto them to get them very tight. Once you got some slots cut it shouldn't take much effort to undo them. I've had to do this a couple of times on different cars. Once you got the locking mechanism out you can figure out why it's not working and have a go at rectifying it.
p.s. you can replace the security bolts with metric hex key/allen key bolts and spring washers. They fit in nicely and you can lock them up tight. Good luck!