23-05-2020 7:27 PM - edited 28-05-2020 7:24 AM
I am afraid that it is your fault, you should have dealt with the case when opened, not dealing with it and buyer escalates to ebay. Ebay will refund on the assuption that you do not want item returned.
Nothing ebay will do now, you have paid a selling fee for nothing and have a damaging defect on your selling account.
You are now stuck, to get them back you would have to send the buyer money to post back with no guarantee that they would not just keep the money and do nothing.
When a case is opened, whatever you may think you must deal with it and appeal/report buyer to ebay afterwards. Whatever ebay do, if anything it will not recover your money.
As a seller you have to accept that ebay will virtually always back the buyer, I doubt that one seller in a 1000 manages to win in this sort of situation.