The options you see may depend on your particular issue and how busy things are in that specific department.
I still see call back options for account issues like suspensions:
For general questions you can try asking on the discussion boards. Experienced users can offer suggestions.
Or 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.
https://community.ebay.com/t5/Selling/How-do-I-contact-Customer-Support/m-p/32016431#M1783851
If using the "Contact us" link takes you directly to the chat assistant window, you may have to enter some context dependent cues to get to the call back link.
Or you can contact eBay via social media:
