Just wantd to update the thread, it turned out that the 'backorder part' wasn't needed at all, (or maybe he was just making all of this up to buy more time for the repair), and I got my car back as per the original scheduled estimate (+ 1 day since it snowed here). Life is back to normal now.
It was unfortunate I hit my car 3 weeks into buying it, and that too because some girl was running her light - although I know its impossible to buy that when I'm the one in a red sports car