Rear Suspension problems of the 1999 Nissan Pathfinder

1999 Nissan Pathfinder rear suspension "swaying" feels like the car is going to roll over. Very scary to drive. Occurs at all speeds but mostly at higher rate (55-60 mph) replaced - per Nissan dealer- front/rear shocks/ struts. When this didn't fix problem then was told about rear bushings needed replacing but only 4 of them. Cost $1200. Still have problem. Took back to dealer and told another/different 4 rear bushing needed replacing another $1200. Have not been able to get back to dealer yet. This should have been a recall-very dangerous to drive this car.