i dont think a body shop would do it for you but if you know some one with a paint gun (or if you got $70 buy a gun) and paint it yourself they only need 2 coats. A paint shop perhaps even a autoparts store will sell basic clearcoat nothing fancy. the difference in useing car-clear over can-clear is night and day.
I made the same mistake of using can-clearcost so dont worry about the can-clear thats already there you can just spray over. Investing in a basic paint gun is great for doing body touchups also. good luck