Dakota Steering Lock

ON my 98 Dakota the key had to be in just right to turn the ignition, I would take the key out and flip it over and keep doing that until it would turn. Don't know if it was a worn key or tumblers or what. I took it to Wal mart for an oil change(first mistake right there)and they broke/fixed it. don't know if they forced it or what but when turning the ignition it felt like it was full of stiff grease and I would have to slightly back it off of start position, then wiggle it a little to get the accessories to work while running