It should have been done, but quite possibly not very well.
e.g. the BB failed on my Allez a couple of years ago, I bought a replacement but couldn't get the old one out, so took to LBS and watched the mechanic snap a BB spanner trying to remove it. He said they frequently didn't grease the threads properly when assembling and so they were often stiff, but mine was particularly seized, leave it with them - I did, preferring not to wonder what they were doing to it, then made sure I properly greased the replacement when I put it in.
I've also serviced some wheelhub bearings before now and been amazed at the lack of grease in there, but headsets have been OK