mate i'm in the same boat as you, my cars been at the smash repair place now for 8 weeks was told it would be ready at latest three weeks from accident, i was the same as you run up the bum of some car at 30km ph not happy. Im with shannons and they told me to ring the place every second day to see how its going. But i think that will just shit them and make them take there time putting it back together, or well it's going to look awsome.
hope yours turns out great, will post picts when finished