I did have a similar experience... parts manager refused to look up the parts I wanted in the microfiche, told me my car belonged in the crusher, said he'd never heard of such a thing as Genuine Classic Parts. I'd previously received good service at the same dealership from a different guy at the parts counter, but I never went back there again.

At a different dealership, the parts manager owned a 544 and several Amazons, and Ialways received service beyond the call of duty. It all depends who you talk to.