Prepay advertisers can only request a refund for the full prepaid balance remaining in the AdWords account. This amount will be returned to the bank account you indicate when requesting the refund or to the credit card associated with your account.
- Sign in to your AdWords account at https://adwords.google.com.
- Click the Billing tab.
- Click Make payments.
- Click Request a refund.
- Fill out all the available fields and click Submit Request.
- If your account is on bank transfer prepay, you'll be brought to a securePayPage. Fill out your bank account details and click Continue. Note that we do not collect your bank account details when accepting AdWords prepayments, which is why we need you to provide them now.