Hey mate,
Sorry to hear that. Try putting in a few dollars fuel into the tank to see if the fuel light and guage problems go away. Maybe they drained the tank or something
As to the other things:
Bonnet subframe (the 'net' beneath it) not connected to top and bonnet thus very flimsy
When there is a hit in the front, the bonnet seals get broken between the subframe and the skin. This does weaken the bonnet and I would have said they should heve been replaced when the repairs were done.
Bonnet does not pop up when lever is pulled, but its released
This is just adjustment. That may be because the chassis is slightly bent or because the bonnet is just not adjusted correctly. They should be able to fiddle with it and get it to open properly for you.
Parts of the car seemingly sitting around inside it
Everything should have been put back in. no question there
Boot light not connected
Is this just a plug or something more
Rear parcel tray cover (which I custom made) now sitting way forward
Did this pop out when the accident occurred. If so, they may not have realised that it occurred. It may be just a simple matter of clicking it back in. If any of the clips are broken, they should be replaced under the claim.
White paint in my rear speakers
This isnt good. They should replace the speakers as a result of them stuffing it up
Had the car resprayed, but paint seems swirled in and bad quality
The insurance company is legally bound to repair your car to a reasonable standard (thats what you pay the premium for). If this has not been met, then you should tell the insurance company that if you dont get satisfaction (ie, repairer redoes the job properly) you will approach fair trading and have them held accountable. You should also be supplied with a car in the interim until the job is completed.
Hope that this works out for you mate. Nobody should have to put up with that sh@T
Oh and yes, there should be a black bar at the base of the parcel shelf in the boot