Hello Jurawath,
Thank you for contacting Google. I understand that you have made an in-app purchase for some diamonds, but never received the content of the order.
I'd like to apologize for any inconvenience this may have caused you. Don't worry, I'll get this taken care of for you today!
I’m refunding your order of First time purchase 440Diamond for $637.68 THB now.
This refund should be reflected in your card statement within a few days, although the specific turnaround time may vary depending on your card company. For a more specific estimate, please contact your card company directly.
Also, for future reference, please know that only app developers can re-send in-app items at this time. If this happens again and you'd like your item instead of a refund, I recommend contacting this developer directly