Extremely Frustrated: UPS Claims Dep. Suggesting Amazon Marketplace's Buy Shipping Service did not record insurance/declared value although they charged seller account for doing so.

I have been following up on a UPS claim for an item that was ordered on January 10, 2023.

1-800-711-5914 (UPS's Amazon Seller claims support number) has continued to transfer me to the main claims department, which usually ends in them telling me to call back for an update in 3-5 business days without any information to provide. I have been calling UPS back for an update and sending supporting documentation for months now, with no headway besides UPS sending a check via mail for $100, when the package was insured for $471 through Amazon's Buy Shipping. (Note, now according to this claim #, it has been "paid out", which adds to this chaotic mess because it was insured for $471, not $100.)

Today, I asked the UPS claims representative (the one who specializes in Amazon sellers, 1-800-711-5914) to explain the situation to the department they were going to transfer me to. The gentleman I spoke to from UPS's Claims Centralized Team says there is no record of added insurance to this package. Then continued with suggesting Amazon's Buy Shipping service may not have recorded or paid the insurance to UPS for package even though we were charged for the additional insurance and order details show the full amount as the "declared value" "insured by UPS".

This seems to be the narrative with most, if not, all UPS claims I have filed for 2022 and 2023. I haven't followed up with many claims due to the endless amount of effort involved that ultimately gets us nowhere.

** With that said, I think it's important to note in past similar situations, UPS will continue to give me the run around until the claim and/or tracking is past their liability policy, despite the fact that they were the ones telling us to call back in 3-5 days for an update.

Any help on this specific situation is truly helpful. Thank you ahead of time :)