If you have not received a purchase order, you can always look at your purchase history.

You can view a list of your purchases on the Google Pay website: https://pay.google.com/

Please follow these steps:

Go to the Google Pay website and log in with your Google account.

2) View purchases
After you're logged in, you will immediately see your purchase history. You can scroll down to look up older purchases. Tap on the purchase you want to check, and you will see detailed information.

You will receive an invoice by email each time you've made a purchase.