How long should it take?

i recently dropped off a nice set of 340 manifolds to my usual blaster guy to clean them up, hes blasted many many items for me over the years and hes reasonable....anyway when i went to pick them up one manifold had a broken ear, i said whats up with the broken manifold, he says you must of brought it in that way. I was super pissed off, i know it wasnt broken when i dropped it off!!!
now you guys know how expensive these are and getting harder to find, im **** out of luck...take pics when dropping off parts...my 2 cents...Rich