Article with information
"Eligible for self-service refunds within 14 days of purchase if you have less than 2 hours of play time across all accounts." However, "DLC, season passes, and add-ons are not eligible for self-service refunds."
Additionally, "The game or app must be downloaded and launched before requesting a self-service refund" and "you must wait for at least 1 day after the game or app’s release before requesting a self-service refund."
Similar to what Steam does. Time for PlayStation NA to step up!