The company has a helpline where customers can call and get answers to such questions. You can call and check the balance of your Check Balance on Cash App Card by going to the menu. You will be able to check your balance by calling the number in less than a minute. However, you will not be able to reach a customer service representative on this line. The only way to do this is through an app or website. However, you can use this string to request the 12 month history of your card account. You can request a transaction history of up to 24 months in writing, you should visit the website for more information.