I've paid them to package and send it and they denied the claim because it wasn't packaged correctly. It's about the same scam as buying insurance on a rental car

I am in the shipping/transportation business and wish you luck getting a dime out of them, even with your insurance coverage, which is likely the only part of that deal they made a profit on. The make pennies on the dollar moving this stuff. They will string you along and stand firm on their "dbl lined box" excuse as their way out of the insurance. Even with what Bobby said above, which sounds like a strong case and defense, still wont cut it. The made that decision above the person you are dealings with pay grade and no one will change it IMO.

I ship disassembled hog traps for a guy, they arrived damaged and I mean beat to crud, and they blamed it on his packaging and after months of dealing with them, yes months, they pay like .25 per lb. Not even worth the claim. He now crates them like airfreight, which costs him a lot more for wood and materials, as well as time. Only way to get them there undamaged.

We use one of the big LTL guys for him and I had one of their claims people instruct him on how to do it to where they would accept liability, otherwise they would refuse the pickup.