Have they actually opened a case for item not as described? Cases are all automated no human contact so you do have to accept it and send a pre paid fully tracked label for the return of your item. Accept the case within 3 days, and only refund when you have the item back, you have 48 hours to do so.
Now, here's the thing we have all recently learnt here. When the item is returned if you think the buyer has abused eBay's 30 day MBG, Money Back Guarantee policy to gain a refund, you now Before you refund, contact eBay Customer Services with all the evidence you have of the breach, here draw the agent's attention to the photos you received clearly showing the cable, ( what a rookie mistake to make if you're trying a scam !).
Hopefully , sense will prevail here and the refund will not have to go ahead, no guarantee to be honest how the cards will fall here, but I do recommend contacting eBay Customer Services tomorrow morning when the lines first open at 8 a.m. more chance of Dublin answering. Select the Call Back then you'll now if it's Dublin's dulcet tones !
To Contact Customer Services it's a Live Chat, or you can select to speak and request a Call Back. Click on this link:
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
On weekdays lines open between 8 a.m. and 10 p.m.
On weekends they open between 9 a.m. and 6 p.m.
