Use the Seller Hub here:
https://www.ebay.co.uk/sh/ovw
Then along the top you will see a row of tabs and Payments.
From Payments click on Summary any payout available for immediate withdrawal, is available for you.
Click on that > you may need to log in again, then on the pop up screen which appears click on Withdraw.
Money is then sent to your bank and it depends on your banks processing times, as to when it is then available for you, most banks can process the payout quickly.
There is no phone number for eBay it's a Call Back option.
If you still need to contact them, the easiest and quickest way to contact Customer Services is through this link, for a Call Back .
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
On weekdays lines open between 8 a.m. and 10 p.m. - 6 p.m.
Weekends lines open between 9 a.m. to 6p.m.
@khanmimi