The best way to reach eBay Customer Service is through a message on the eBay facebook page. It's not a 'chat', but you can exchange emails with qualified Reps who actually have the ability and resources to offer 'Service'. Good luck.
You can use the Help & Contact link at the bottom of the page to request a call back from eBay. Use the "Contact us" link and follow the prompts for your issue and you should eventually wind up on a page with a chat option. Choose that, and the last option that appears in the chat window -- use the "See more" option -- should be "Contact an Agent" to request a call-back if you are in North America.
