EBay are actually a disgrace

I’ve sold on eBay for over 10 years, had a few buyers pull the wool so to speak over eBay’s eyes. The latest idiocy is someone claiming pyjamas that were sent brand new with tags have been worn and aren’t as described. They arrived and I parcelled them up! They’ve then waited six days after messaging me to request to return so not only am I now paying for the postage cost to get them back but also the postage to send and item cost. Absolutely livid. EBay offers 2 ‘solutions’ refund them immediately and they keep the item. Absolutely not. Or. I pay for postage then refund them when they arrive back to me. From the photo sent by the buyer, they’re not even the same pyjamas. The other 2 pairs I sold I received extremely positive feedback for. I have rang eBay and they have just reiterated what was said on the case page. Sick of them siding with buyers every time!!!!