What are monthly membership products (subscription products)?

I want to refund a monthly membership product. / I want a refund for the unused subscription period.

I want to know how to cancel my subscription to a monthly membership product (disable auto-renewal).

My monthly membership product’s is still active, but I have been charged for a payment.

Even though I deleted the app / deactivated my account, I was charged a subscription fee.

The monthly membership product is not renewing automatically.

I’m being charged the subscription fee even after changing my mobile device.

The subscription perks of the monthly membership product are not being applied.

I want to know more about the duration of the subscription perks for monthly membership products.

I canceled my monthly membership subscription, but I was charged a fee.

I didn’t receive the immediate items provided upon the monthly membership purchase/renewal.