There is much more going on behind the curtains between the old body shop manager's crew, the new crew, the insurance company and the dealership than you may understand.
Elizabeth's advice is certainly the best
Your insurance wants to get the quality of work they paid for...but they also may not be paying for the best quality work. Perhaps the situation with the old manager was awful enough that you're job slipped through the cracks? You can certainly expect an insurace adjuster's evaluation of what needs to be done next.
This is unfortunate, but typical of what happens when insurance jobs need re-doing. It sucks you have to keep making phonecalls to your insurance and the shop to get things done sometimes but I suppose the good news you aren't putting miles on your rig :>