Coinbase's online support on call 1-(877)-342-0539 is available 24/7 and includes technical support, crypto products information, and account updates. We have support resources available to help you over the phone when you call us on Coinbase customer service number 1-(877)-342-0539.Coinbase's online support on call 1-(877)-342-0539 is available 24/7 and includes technical support, crypto products information, and account updates. We have support resources available to help you over the phone when you call us on Coinbase customer service number 1-(877)-342-0539.