As of 2015, the Square customer service number is 1-855-700-6000. Square customer service is available Monday through Friday from 6 a.m. to 6 p.m. Pacific Time.
Square offers several ways to access customer support. To contact Square support on the telephone, a customer code is required. To access the customer code, log in to Square's website and review the Square account. In addition to phone support, Square also provides live email and Twitter support.
Square's Support Center offers a library of support-related guides available online. These guides range from beginner start up guides to advanced topics such as sales history and reporting. Account settings can also be changed from Square's support area, including managing language settings, updating the user's taxpayer identification number, adding two-step verification and location management services.