You cannot call directly, but you can request a call back from eBay if you are in the US:
https://www.ebay.com/help/contact_us?id=4002&st=10
Or you may be able to contact eBay via social media:
https://twitter.com/askebay
https://www.facebook.com/eBay/
If you have a general question that does not involve account details, you can try asking a question here or on one of the other discussion boards. Lots of experienced users can offer advice and suggestions.
