Can't align after accident/ possible bent frame?

Any opinons on this are appreicated.

My 99 Durango was recently hit on the left rear quarter panel and back bumper. The car remained in place but the body was shoved diagonal until a loud snap occurred and it rocked violently back into place. I drove it away but it pulled severely to the right, almost to the extent it was undriveable.

The collission center replaced the bent leaf spring and attempted to align it. Failing, they sent it to another alignment shop where it spent 3 days and came back unaligned. It is now at it's third alignment shop.

For some strange reason they started repairing the body damage and paint before attempting to align it. Now it won't seem to align and I'm concerned the frame might be bent and the car should not have been repaired. Any opinion? I know nothing about cars.