You received batteries that were Not As Described.
You did not open a Claim yourself, but depended on half trained phone reps to do it.
Apparently they didn't.
The phone reps have a terrible reputation for getting you off the phone as soon as possible even if that means giving you the advice you want to hear instead of the advice you need to have.
https://www.facebook.com/eBayForBusiness/ — Message button in upper right on landing page.
https://www.instagram.com/ebayforsellers/
https://community.ebay.com/t5/Selling/How-do-I-contact-Customer-Support/m-p/32016431#M1783851 -> Automated Assistant, type AGENT -> enter. You will then get more options.
The social media Chat accounts are covered by trained eBay employees with some authority.
And you get a transcript so you can compare what you heard with what you were told.
When YOU open a Claim, the seller is told to send you a Return Shipping Label.
There are provisions for cross-border and international returns.
If you don't get the label, you win the case and are refunded.
If you get the label, when tracking shows delivery, you are refunded.
If the seller does not refund voluntarily, YOU go back to the case and ask eBay to escalate.
EBay will refund you and go after the seller for their money.
Basically you were reinventing the wheel.
When you Chat with the reps on social media, ask if a Claim was actually ever opened.
If not, you have 30 days from delivery to do so.
If if has, you will be working with the Chat rep to appeal the decision.
Note that you are also covered by Paypal if you used that for 180 days from payment, but that PP required the buyer to pay for return shipping. In this case to the seller's US address.
And you can phone the 1-800 number on the back of the credit card you used about a chargeback. Policies between cards differ, but 180 days from payment is the usual Claim period.
