The link below does work, but it's not a direct link to CS, at first you are directed to an automated assistant who is insistent they can help you! Either keep asking them questions they cannot answer and keep asking to speak to an agent , and you are eventually put through. It does take perseverance !
I strongly recommend contacting CS at 8 a.m. on weekdays and 9 a.m. on weekends when ' live agents' are available bots work outside these hours , and at that time there's more chance of Dublin answering, only speak to them.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
@monster.chub