I forgot to cancel my subscription. Can I get a refund?

Yes, if you have been charged for a subscription that you no longer want, you can cancel it.

An Apple refund works as follows: 

1. Log in to reportaproblem.apple.com .
2. Click on "I want" and then select "Request a refund". 
3. Select the reason for the refund and click on "Continue".
4. Select the app, subscription, or other item and click Send. 

A refund on Google PlayStore works as follows: 

1. Go to play.google.com.
2. Click on your profile picture in the upper right corner.
3. Click on Payments & Subscriptions.
4. Click on Report Problem for the order you want to return.
5. Wähle die Option aus, die Ihre Situation am besten beschreibt.