Help finding a repair shop

Got in a "fender bender" messed up my front end and did some damage under the hood. Insurance gave me a grand for cosmetics and told me that any damage under the hood would also be covered by them, just have the shop send them a bill i guess. Anyways, I already have an r bumper (unpainted) and wanted to know if anyone knows a good repair shop in socal. Did some calling around but a few shops said they wouldn't use my r bumper. Idk why

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