I agree with you. When I got my lower ball joints changed on the GS, the guy told me that they will try and mark everything up, so that it all goes back in the same position. However, ideally, any suspension components that get replaced warrant getting the alignment/geometry checked out.
Fight your corner mate, it totally upsets me when you pick a car up from a dealer, they are supposed to have checked it prior to giving it back to you, and it's got problems that a monkey could have spotted.