get your own assessor off the net and get your car assessed
go to a reputable panel beater or restoration shop and get a couple quotes for the damage, make sure to tell them you want all new parts and no orange peel in the paint (even they get slopy)
then ring up the insurer and send them those quotes and your assessor's report, they will more than likely shit themself and do the job properly..... and pop in to the panel beater every day and make sure everything is being done right