Refund money from Google Play store

How to refund money from Google play store?

when you want to buy an application (paid version) from Google play store you can paid via Google wallet.

But if you have problem when downloading apps because your android device not support (your money purchase not enough)or change your mind about

downloading this app.You can refund your money from Google play store within 15 mins. after purchase.

• Go to Google Play store app >> Menu >> My apps.
• You will see two button "Open" and "Refund".
•   Press a "Refund" button, and apps will be uninstall automatically.
•  Google will send confirmation e-mail to your Gmail inbox.