Hello all new newbie here looking for some help.

I'm changing a rear bearing on a 2006 4x4 equinox. I removed the axel nut, and three of the four bearing bolts,but I stripped one. I'm not sure how I should proceed, I've already tired heating it with one of these ( http://www.totaltools.com.au/www/648...-packaging.jpg ) but no luck. Any help would be greatly appreciated.