Not a good design - SSI Sight-Rite Deluxe Laser Bore Sighter for Pistols, Shotguns and Rifles

I wanted to save some money and cover a wide range of guns. The inaccuracy of the o ring system and the mandrel being frail made this a useless tool. I gently mounted it in a quality drill and corrected the aim of the laser by spinning and adjusting then used my lc9 with its own laser and adjusted the gun to Match up a 20 feet. When I looked throught the sights of my gun the red dot was not even in view over six inches off. When I rotated the gun with the bore site in it there were new locations each time.how do I get my money back?