Differential Unit problems of the 2000 Subaru Outback

I was driving along, around 50 mph. I hit a bump in the road, and there was a loud bang. The vehicle jerked and swerved, as it was snowing. . . I almost lost control. The rear sub-frame was rusted out and had broken, allowing the rear differential to break free and smash up into the fuel tank and cause severe jerking. I had done a little reading, Subaru had a recall on this vehicle for inferior metal on the rear sub-frame. This vehicle was in for the recall in 2003. Where they deemed it not bad enough to replace the sub-frame, but clean it and spray it with anti corrosion substance. As it now stands, the car is not drivable, and the recall fix was clearly not a proper solution. I called Subaru, and they told me that since it had been in for a recall in 2003, there was nothing more on there end that they would do. I am a long time Subaru fan, and I really just would like them to honor their mistake, and fix the vehicle properly. Or purchase it back from me, and I will gladly purchase another Subaru. I have photos of the sub-frame where it has clearly rusted and broke free. It is very clear that the metal is inferior, considering everything else on the underside of the vehicle is in functional and serviceable condition. Thanks you.