Following an accident where an alloy and tyre were fitted, I requested if I could have the original wheel back for a spare as I knew it was perfectly okay. The repairers told me to ask the insurers since they would be paying for its disposal. They said no due to legal liabilities, etc. I offered to sign a disclaimer, waiver absolving them and the repairer of any liabilities and pointing out this would save them disposal monies. They still refused. What can I do?