Help my new interior has been ruined, interior destroyed as oil cooler was to be installed! Options

[wes]

Last year a week before the Monterey car week I scheduled to have an oil cooler installed on my return form the Wreks Reunion Concourse. I took my recently restored 914 to have the oil cooler installed plus an oil leak repaired on my new 2056 stroker engine. When I arrived I paid him the $1837.15, I noted that no oil cooler was on the repair receipt plus a number of repairs were done that where never talked about
(he never gave me any kind of estimate written or otherwise) said he adjusted the carburetion, checked the valves adjustment and test drove the car, it was cooling fine now, well great! Now when I went to the car first noticed the car setting outside with a scratch to the paint on rear quarter panel, then the interior, the shop left the window open during a rain storm resulting in mold growing on the new carpets. When I spoke to the shop owner he replied he would take care of it so I left it with him, after returning as he said car cleaned up good, scratch buffed out and ready to pickup I found the new seats destroyed. He said he tried to clean them and he doesn't know what happened.
He also ruined one of the new door cards, the new consual, new dashboard and the aluminum floor pan scratched. He now told me to get an estimate so I trailer the car home. Next morning was excited to take her for a short test drive to the coast and after driving for a few minutes seeing the oil temperature was rising quickly now at 265 degrees stopping at first chance and shutting her down. When I went to open the engine compartment the lid won't open as it was binding on the trunk, (it was fine before but one fo the items he charged me for). I had to open the trunk for it to clear the now scratched trunk lid. Ok now after calling him he had me bring it back. Ok not smart on my account! So after taking the car back again he pulled the Weber carbs and sheet metal to see if it has a cooling problem, he said it looks good! I explained that I brought the car to him for a oil cooler and I already knew and had checked for a cause for it's over heating. I at that time even bought the parts needed for the oil cooler he then at that time tells me he's not sure he is qualified to install the oil cooler and charging me another $521.85.
I've reported the two charges on my BofA card totaling $2359 to the Bank of America and they're requesting an estimate by a shop with the shops name and I'd on the estimate. I'm looking for a shop that is qualified to give me the estimate needed plus installe an oil cooler. I live in Northern Ca. Ukiah about 60 miles north of Santa Rosa