Ang refund kasi ni google is based sa email address at payment method na ginamit nyo. If may history na either sa dalawang yan, need nyo itawag sa google for manual review pero the best refubd reason is either "accidental purchase or friendly fraud". Make sure turned off ang purchase authentication nyo bago kayo bumili at mag request ng refund. Nadedetect ni google yan. Sana makatulong.