If you have tried for 20 hours with Customer Services agents little else we can recommend unless you wish to try one more time and contact CS at 8 a.m. on a weekday as there's more chance of Dublin answering.
It's not easy as there's no direct link, but with the link below, if you keep asking the bot you wish to speak to an agent , you will get put through. It takes a lot of perseverance.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Payouts can be held for long periods especially if some changes have been made to personal information.
This explains eBay's payment holds.
https://www.ebay.co.uk/help/selling/getting-paid/getting-paid-items-youve-sold/payments-hold?id=4816....
@motomaniaukparts