Investing Pro Subscription Overcharged and Unable to Cancel

I purchased a 2-year subscription to Investing Pro yesterday, but the amount charged to my card was higher than the advertised price. This has caused significant distrust, and I am requesting a refund for the overcharged amount. Additionally, I would like to cancel my subscription immediately.

I attempted to cancel through Google Play as instructed, but the subscription does not appear under "My Subscriptions," even though I used the same email address to log in. This is both frustrating and time-consuming.

Attached are screenshots of the advertised price and the amount deducted. Please resolve this issue promptly by refunding the excess charge and canceling my subscription. Transparency and effective customer support are expected for a service like this.