I Want FamRadar to Refund Recent Subscription Payments

I am being charged for a FamRadar subscription on my Android phone, even though I do not use the app and it did not work for me when I tried it. Despite my attempts to cancel the subscription, the charges have continued, and the most recent payment was taken from my card on 05/24/26, with the card ending in 1220. I want FamRadar to immediately cancel my subscription, stop any future charges, and refund the recent payments that have been taken without my effective use of the service. I request that this issue be resolved as soon as possible and that a clear confirmation of the cancellation and refund be provided to me.