Crunching Noise in Chrysler Town & Country over bumps and through turns

It is usually the sway bar bushings and the rest should not had been changed IMHO. Put some silicone spry on the bushings and see if the noise will go away temporarily. If yes then next time ask the shop to use the Moog blue bushings. I agree that the shop who charged you for the diagnosis and repair should fix the car now, but usually they will recommend to change another part that may or may not fix the problem.