Stinger
Sorry only just seen this, I am totally gobsmacked
I had a simular incident about 12 yr ago however at the tine I lived in a pretty rough part of Berks!!! (Temp thing) and I had a custom build Nova and basically it was vandlised but not to the extent of yours I had one Police officer come round and looked at the car and gave me a crime number, that was the last I heard from them.......
I feel for ya mate, hope you get it sorted, and as for the Police, I too have no confidence in them, as someone said, getting their numbers is the importance, not actually helping the victim.
Good Luck Mate
Kaz