Hi all
We finally contacted our USPS rep to inquire about the "other" charges we keep receiving from Amazon. This is what they've shared:
Amazon is not charging these fees, it's USPS
This is happening at automation centers, by bots (we have been battling USPS bots for 2 years now, and they all seem to be programmed to error in USPS's favor)
There's a process to file disputes to recover all these "other" fees, but posting it will require me posting outside email/phone number for MCCS (Mailing and Shipping Solutions Center) but you could probably figure out how to contact MCCS at USPS if you thought about it. (if a mod wants to post the info, I am happy to DM it)
I'm sure like everything else USPS related, there's a time limit for recovering funds, I'll post more info when our rep replies today with further info.
We stand in line at the counter and scan every package individually, and receive email receipts, so we have records of the outgoing weight of every package--we would not have been able to fight many of these claims without proof of the outgoing weight (bots regularly add weight to our packages on Stamps, and we caught them and received a ton of refunds, so they stopped. Then bots started marking "incorrect packaging used" and adding postage, so we fought those and they stopped)
It seems when we catch the bots and USPS has to pay a human to reverse the mistakes, the bots stop trying to steal our money. The scam stops as soon as we catch it.
Just thought I'd share some of this info with other sellers.