FamRadar Subscription Cancellation

I installed the Famradar mobile app and started a subscription, but I canceled it about one week after installing the app. Despite this, the app has continued to try to charge me through Google Pay, even though the subscription was canceled and the app has since been deleted from my phone. Because my balance was insufficient, these charge attempts did not go through, but they repeatedly appeared as failed charges on my account. As a result, my account has already been blocked twice. The most recent failed charge attempts that I noticed were on June 12, June 16, June 23 and July 1. I deleted the Famradar app, but the charge attempts have not stopped. I request that my Famradar subscription be fully and permanently canceled and that all future charge attempts through Google Pay be stopped. I also want written confirmation that my subscription has been canceled so that this issue does not recur.