That's bevause there is no email or phone number for eBay, it's a Call Back option.
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.
Or, if you have a problem that needs solving, come back to us here and tell us, there are many very experienced people here, happy to help you.
@moogkato
