I banged mine up a little less than a year ago. New parts were fitted including cladding (drivers side door, quarter panel and rear). All through insurance.

Was fixed at a GM dealer. They were not responsive when I asked them to send details about where parts were obtained etc. GM has since shut the dealer down (primiarily related to poor customer service apprarently).

Push for a full insurance repair.

Also KODIAK had a front end collision repair that went quite quickly. Search his postings.