To initiate a refund request from Google Ads due to suspected invalid or fraudulent clicks, you must submit a Click Quality Investigation Request through Google’s official form, which can be accessed [here].

As part of the submission process, Google requires detailed evidence of suspicious activity, specifically a click log documenting the potentially fraudulent clicks. You can easily retrieve this information from your ClickGuard dashboard by navigating to the Clicks section and selecting the Export option. 

Please Note:

Google only permits one manual click quality investigation request per advertiser account every 60 days. Therefore, it is essential to compile and submit all relevant evidence and supporting data within a single, comprehensive request to maximize the chances of a favorable outcome.