We have no access to your account and can only explain the process which it seems you may have followed already.
Payouts sent to the wrong or a closed account will just bouunce back to eBay. Add your new bank details with the link below. It can take quite a few days later for eBay to verify this, and then the payouts will be sent there. The name must match the one in your eBay account eactly, down to any middle name, middle letter etc.
https://ppcapp.ebay.co.uk/myppc/wallet/list
If you do need to contact eBay Customer Serv ices, I do recommend contacting them very first thing in the morning when the lines first open at 8 a.m. there's more chance of Dublin answering.
To Contact Customer Services it's a Live Chat, or you can select to speak and request a Call Back, I find the easiest and quickest way is via this link:
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
On the left sidebar you can see Have us Call you or Chat with Our Automated Assistant.
On weekdays lines open between 8 a.m. and 10 .m.
On weekends they open between 9 a.m. and 6 p.m.
@m13569