you can schedule a call with ebay, they send you a code you have to input. It was already said by another poster, but you can always open a credit card dispute. Technically you are supposed to do it via PayPal not you cc company, but the time I got scammed through Poshmark I went straight to Visa and all was well.
Paypal might still come through. I accidentally bought a fake off Mercari and, not knowing any better, accepted it which releases payment to the seller. Posted pics of my bag and was immediately (and rudely btw) told it was fake

Tried for days to contact Mercari and got stuck in a loop so I went to Paypal explained what happened and that Mercari’s communication links weren’t working and they forced a return. I had very specific instructions for the return but I got my money back.