If you have not received a purchase or you are not sure of one specific order, you can always look at your purchase history.

Access your Google Pay
You can view a list of your purchases on the Google Play website: payments.google.com/payments/home

Please follow these steps:

1) Log in
Go to the Google Play 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.