Do you mean you are being refunded for an item you didn't buy? Or, the seller is refunding for an item you did buy, but for no good reason?
If the latter and you have not agreed to the refund, you cannot force a seller to send a paid for item but you can inform eBay Customer Services of this, that you did not authorise the refund, and were disappointed not to receive your item, they may place a defect on the seller's account.
If you need to,
This is the easiest and quickest way to contact eBay Customer Services, for a Call Back option.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Lines open 8 a.m. - 10 p.m. on weekdays
9 a.m. - 6 p.m. on weekends.
Automated agents will be available on chat outside of the above hours.
I recommend contacting CS first thing in the morning as there's more chance of Dublin answering.
@sparkus48
