navigating the web,
AAAARGH! NO!!
You will not find eBay's numbers on the web, only scammers and identity thieves.
The phone reps have a terrible reputation for getting you off the phone as soon as possible even if that means giving you the advice you want to hear instead of the advice you need to have.
https://www.facebook.com/eBayForBusiness/ — Message button in upper right on landing page.
https://twitter.com/askebay?lang=en
https://community.ebay.com/t5/Selling/How-do-I-contact-Customer-Support/m-p/32016431#M1783851 -> Automated Assistant, type AGENT -> enter. You will then get more options.
The social media Chat accounts are covered by trained eBay employees with some authority.
And you get a transcript so you can compare what you heard with what you were told.
I'm glad the child's parents were so helpful.
I also hope their attempt to cancel /change the feedback was recorded. This may help the REAL reps.
BTW- most of that information is at the bottom of this page and of other eBay pages under Help and Contact.
Speaking does not allow the rep time to investigate and act. Which is why the Chats are more useful.