If you have any purchase or payment disputes, we would highly suggest to please present a screenshot of your invoice, as we will need the order number, name of the package, and the date and time of purchase to check your account.
For purchases made in Google Play:
1. Visit pay.google.com and sign in with the Google account that you used to purchase.
2. On the left, tap Activity.
3. Select an order to see your receipt. If you need your order number, you can find it on the receipt page when you tap a purchase.
(Usually, the Google order number starts with GPA.XXXX-XXXX-XXXX-XXXXX)
For purchases made in the Apple App Store:
1. Go to reportaproblem.apple.com.
2. Sign in with your Apple ID and password.
3. A list of your recent purchases appears. Tap your most recent purchase.
4. Screenshot your latest purchase in the House of Blackjack, House of Poker, or House of Slots.
For more information please refer to this link:
https://support.apple.com/en-us/HT204088
Massive Gaming Support Team
https://massivegaming.oqupie.com/portals/1828/inquiry