Worst Autobody in town!

My car has been sitting with this Autobody for 8 weeks.My car originally went in for a dent o. The rear left and due to this my boot did not open. 4 weeks ago at around 13:00pm I phoned them to check on the progress. They informed me that a warehouse was broken into and therefor they dont have the needed parts to fix it. 2 hours later they phone me and tell me I urgently need to make my way to the shop. When i get there i get told that my car was ready and fixed all of a sudden and as they were washing it in the washbay it set alight. They then proceeded to show me where the fire started and it was a wire from the fusebox right down to the boot that they needed to fix. When asking if the boot now works seeing as my car was ready to take home, they said well, sometimes it works and sometimes it doesn't. Because of their "quick fix" i have been without a car for 8 weeks and it is worse off than when i took it to them. On top of this they aren't even trying to fix any of the problems and my car is just standing there.