I Can't Cancel My Prezi Subscription Purchased via Google

I subscribed to Prezi through Google but decided to cancel my subscription the same day. Despite carefully following every cancellation step, my Prezi subscription is still active and doesn't even appear under my Google subscriptions. How is this possible? I've tried everything recommended by Prezi, yet I remain stuck with an unwanted subscription that continues charging me ₺. Prezi's cancellation process is clearly broken, misleading, and completely unacceptable. I'm extremely frustrated—why is it so difficult to cancel something I subscribed to just hours ago? Prezi, resolve this issue immediately! I expect a swift cancellation of my account and an immediate refund of any charges incurred. Stop trapping customers in subscriptions they no longer want and fix your subscription system now!