This Seeking Tech article will show you how to easily and quickly request a refund from the PlayStation Store by using the PlayStation Store mobile application.
If you haven’t done so already, you can read the refund policy to see what can and can’t be refunded from the PlayStation Store: https://www.playstation.com/en-us/support/store/ps-store-refund-request/
You can then follow the video and text guides below:
Step 1: Open the PS App and then sign into your PSN account.
Step 2: Tap the shopping bag icon to open the PlayStation Store.
Step 3: Tap the hamburger icon.
Step 4: Tap Transaction History.
Step 5: Select the transaction with the product you want to refund.
Step 6: Tap Request Refund.