Your payment method is actually handled and processed through your Google Android Playstore or Apple Appstore accounts. If you'd like to update them, here is how!
- On your Android phone or tablet, open the Google Play Store app .
- Tap Menu Payment methods More payment settings.
- If asked, sign in to pay.google.com.
- Under the payment method you want to edit, tap Edit.
- Make your updates.
- Tap Update.
Follow this link :)