IDK, soak the package in salt water for a week then fold in half and stomp on it hard. Kinked rusty strings might be considered fouled up. Never under estimate their ability to destroy a package.Hopefully they're not able-or too lazy-to f---*up a packet of strings.
*oul
I ordered a new acoustic bass from Amazon years ago. When it arrived from UPS it had a 6"x6" hole all the way thru the outer box, the hard case and the bass. Looked like somebody drove a forklift tong right through it. Why they needed a forklift to move a 15 pound box is still a mystery to me.

