Never a problem with UPS. When packing and sending valuable merchandise, I use a UPS Store. They have professionally packed keyboards and other instruments for me, and were sent quickly, never lost, and delivered undamaged. It may cost a few bucks more, but it makes me feel a little more at ease knowing the merchandised was packed by a pro.
It's certainly unsatisfactory that they haven't responded to your claim, but I heard FedEx is also slow in tracking down 'lost' items. The tracking # will be able to pinpoint where it was last handled, and that should help in finding out what the heck happened. They have no excuses or recourse, but to pay your claim.
I wonder what happens if someone files a claim, and is awarded the insurance money, and later the package is recovered, undamaged. What happens to the recovered package, and does the sender keep the insurance claim money?
Anyway, Good Luck, hope it's settled soon.
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Larry "Hawk"
♫ 🎹🎹 ♫ SX-900