If you want to get money back for any transaction that you make here, then you should have to make a  request for it. If you want your money back for an individual transaction, then ask them to make a refund. In the case of a store or merchant, you will have to apply for a refund. If still any queries, please talk to a Cash app representative to fix it. https://www.emailcontacthelp.com/cash-app-customer-service.html