There is rarely a call back system in place now, as eBay staff, mainly based in the Philippines are working from home, because of Covid. The main line of communication with them is a Live Chat link.
Contact them this way.
https://www.ebay.co.uk/help/contact_us?id=4814&st=10
The contact links can be found on the left on that page.
Lines open today between 8 a.m. and 10 p.m.
Why don't you come back here tel us your problem, many experienced members here happy to help you.
