If your rack was damaged by someone else then it's just a matter of how long you are willing to not settle.
I had a friend that got a check from an insurance agent and never cashed it because it wasn't for the amount he thought he was due. A year later he wen back to that insurance guy and ask when they were going to settle his claim. The agent said that the claim was already settled because he'd cashed the check. My friend showed him the check showing that it hadn't been cashed. The agent muttered a few words and then wrote and exchanged checks giving my friend the full amount he originally wanted.
Still, we are just guessing the particulars of your situation and have no idea if it's your insurance you are asking about or whether someone else's insurance is paying.