https://support.google.com/admanager/thread/306589585/quick-refund-%F0%9D%9F%99-%F0%9D%9F%A0%F0%9D%9F%A0%F0%9D%9F%A0-%F0%9D%9F%9F%F0%9D%9F%9B%F0%9D%9F%A0-%F0%9D%9F%98%F0%9D%9F%A0%F0%9D%9F%99%F0%9D%9F%9A-how-do-i-cancel-a-%F0%9D%95%94%F0%9D%95%A3%F0%9D%95%A6%F0%9D%95%9A%F0%9D%95%A4%F0%9D%95%96-without-penalty