Not eBay here, just other members.

I you cancel an order, eBay will refund you except for the flagfall (30 or 33c).

If you don't cancel the order, eBay will keep all the fees because they consider you have been paid outside of their system.

Either way, it is unlikely that eBay will refund you, and you would have to contact eBay about the matter, not other members.. Treat it as a cost of doing business.