As of now, Coinbase does not have a support phone number that customers can call. However, they are available through email and their social media channels.
NOTE: WARNING: Please be aware that Coinbase does not have a support phone number and any phone numbers claiming to be Coinbase support are likely fraudulent. If you are ever contacted by someone claiming to be from Coinbase, please contact Coinbase support directly through their website or help center before providing any personal or financial information.
Some people have been able to get in touch with customer support by tweeting @coinbase or @coinbasesupport. Others have had success reaching out to them on their Facebook page.
If you need help with your Coinbase account, the best way to get in touch with customer support is through email or social media. While you may not be able to get an immediate response, someone from Coinbase will eventually get back to you and help you resolve your issue.