Just to make it clear!
A VAN with a tyre at the front has RAMMED UP HIS ASS and pushed the boot 2" forward, this is no "tint-a-car" accedental dent!
Boot probably should be REPLACED, bumpers and reo removed and tail-gate pulled out into place. This job will easily cost over $1000.
If you live in Melb. take it to Gal's Smash Repair in Tulla. They are awesome! Adzmax, Mavric, and others, who live on the eastside, have made the trip because of the quality of work. I know someone that lives near Sale, got his car repaired there. Not sure how long they'll take, as they are pretty busy, but quality takes time and you'll be happier in the long run.
PS: Import/compliance shops are NOT pannel/spray shops and generally out-source their repairs for minimal cost, you best use a dedicated paint shop.