To get a refund you first need to select the transaction because only then can clear the dilemma, how to get money off cash app without bank account? But if you can’t select, then you can use the alternatives or hacks that are provided by tech support sites. If these hacks don’t work, then you can get the issue resolved using the customer care support.
https://www.my-lenovosupport.com/blog/how-to-get-money-off-cash-app-without-bank-account