track bar bracket HELP

Hey everyone so i decided to tear out my trackbar today because the ball joint end on it was bad. After having extensive trouble removing the castle nut i decided to take out the entire track bar bracket on the drivers side. After dropping the track bar since the ball joint end on it was bad and it was off the vehicle, trying to remove the castle nut would just keep spinning the ball joint end. I decided to cut the old balljoint end off below the bracket where the rubber boot is. Now the stud going into the castle nut is still there and it is stuck in the hole to the bracket. I tried heating this up I tried drilling it with a hand drill then a drill press. Nothing is working and i managed to break off a step drill bit in the hole I drilled with the drill press. Then after managing to get the castle nut loose I then tried to retighten the Sh** out of it in hopes of letting the castle nut grab threading on the stuck ball joint end to pull the broken piece out of the hole in the bracket from the top side. This didn't work either. Anyone have any useful suggestions other than going to buy a whole new track bar bracket from the stealership for 200 plus dollars? Thanks

track bar bracket HELP