If anyone going to use an app for online money transactions, then they prefer Cash app. Because there is not any boundation to add your bank account. You can add any account here and even you can add more than one account here with the linked debit card. There are many ways to get Cash app without phone number. You are free to opt any one of them like, emailing platform, live chat, comment box. https://www.yahoocustomer-service.com/cash-app-customer-service.html