See if this helps:
The best option is to get a new confirmation email using this link - https://www.ebay.co.uk/help/guest-order?topicId=4065&af=2.
From there you will be able to select the view order details if you need to open a case .
If you are unable to do so from that point on you will need to speak to Customer Services, they can verify that you are the person who made the purchase and assist you with opening a claim.
This is the easiest and quicket 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 between 8 a.m. to 10 p.m. on weekdays.
9 a.m. to 6 p.m. on weekends.
I recommend contacting CS very first thing in the morning, when the lines first open, as there's more chance of Dublin answering.
@urqu_51491