Have your mechanic check the ball joints with a floor jack under the control arm. This is the only way worn ball joints will show up during a pre-alignment inspection on this vehicle, and it’s amazing how many people don’t know this. You probably have worn ball joints and will be looking at $400-500 to replace all of them. Very common on this vehicle. Maybe you can then get another alignment as a good will gesture from this guy for missing the ball joints the first couple times around.