However, you can contact the cash app support number on phone by calling 1 (800) 969-1940. Now, do you learn how to contact Cash Support on the web? First, navigate to cash.app/help. However, scroll down on this page and click on the "Contact Support" link at the bottom of this page. Then log in. Consequently, navigate to your problem. However, For help related to supporting money applications, you can visit our website.