App Store purchases are refunded by Apple, under Apple's own policy — request it from your Apple ID account.
Google Play purchases are usually refundable within 48 hours directly from your Play Store order history; after that, contact us and we'll raise it with Google.
Website purchases are covered by your local consumer-protection rights (including a right of withdrawal in the EU/UK where it applies) and our published refund policy — contact info@ouromedia.net.