Look at the front control arm bushings especially the large donut one, check for a broken sway bar, look carefully these break near the steering rack, Rusted out trailing arms or bushings are another weak spot as well as the trailing arm perch where the bolts are.
It could be a lot of things but these are common. Find another shop, any decent mechanic should be able to diagnose this blindfolded.
It could be a lot of things but these are common. Find another shop, any decent mechanic should be able to diagnose this blindfolded.