Insurance advice needed

[cobramania]

Guys, I'd like to hear your thoughts.
Last month I ran into/over some debris on the hwy & smashed the lower bumper/air dam & damaged some parts under the Cobra. My smash repairer says there's about $2500 worth of seen damage, but more under the car may be damaged when he starts pulling parts off. The silver mouth section alone is $800 from FPV.
He took photo's & emailed them & a quote off to my insurer, Shannons, 3 weeks ago. Nether of us have heard anything back, telling us they approve repairs, so he chased them up again today, & they said they have no excuse/reason, but it was booked to have a digital assessment (they'll take a look at the photo's, not the actual car) next week, they couldn't bring it forward & won't do anything more.

Christmas is coming soon & I'd like the car fixed, parts will likely have to come from FPV/Ford factory up to Newcastle (last lot of parts I needed took 2 1/2 weeks).

I couldn't blame anyone for the debris, so had to pay the excess, which I did upfront when I lodged the claim, so they've been sitting on that $650 for 3 weeks now.

Also funnily enough, my insurance is due for renewal next week, do you guys think I should renew the policy or go elsewhere, what would you do?

My smash repairer is actually a really good mate of mine, & he doesn't like any of the Suncorp group of insurance companies, this problem has really got him irate.

What other insurance companies do you guys suggest?
Companies underwritten by the Hollard group, don't seem to want to insure the Cobra, with Cat. back exhaust or at a reasonable agreed value.
Wesfarmers underwritten seem pretty reasonable & will give me a higher agreed value than Shannons currently do. I haven't called Lumleys yet, do they do cars under 10 years old? Coles insurance seem good, but I have to pay extra to protect my no claim bonus?