How do I cancel my subscription billed through Google Play/Android?
You may cancel your subscription (including free trials) at any time. Subscriptions are automatically billed according to the period stated upon purchase (weekly/monthly/annually). The cancellation steps vary depending on who your subscription is billed through.
Another way you may have signed up is through an Android app. If you're using an Android phone and subscribed through the app, your account is being billed and managed by Google Play. To cancel your subscription, you may watch this helpful video below: