Requesting Google Ads for a Refund

It's a good idea to request a refund, but whether or not Google will provide the refund is up to them.
The frequency of request for the refund is about 60 days. It helps to provide as much detail as possible so they have enough proof. 
The advantage of TrafficGuard PPC Protect Pro is that, we are preventing your ads from being shown to the fraudsters and so reducing the amount you would need to claim back.
TrafficGuard website has a detailed article on How to request a refund.

To ask for a refund you can follow the steps in above link.