If you have an iOS device:

First you need to cancel your subscription in your Apple ID in the 'Subscriptions' section (tap here to learn how to do this ).

If you'd like to get your money back, you should get in touch with App Store following this link - https://reportaproblem.apple.com, since they handle all payment questions.

If you have an Android device:

If you got the app from the Googe Play Store

First you need to cancel your subscription in your Google Play account (tap here to learn how to do this).

Then you can read the information in the link and request a refund: https://support.google.com/googleplay/answer/2479637

If you got the app from the AppGallery

First you need to cancel your subscription in your HUAWEI ID (tap here to learn how to do this).

To get a refund, you need to contact AppGallery support: https://consumer.huawei.com/ph/support/contact-us/

If you bought the subscription on the website https://instories.com/:

Refund is possible if you were not provided with the service. If this is your case, please contact our support team via the chat.