To cancel your free trial on Hulu follow these steps:

 

  1. Log in to your account.

  2. Go to your account settings 

  3. Here is the subscription section. 

  4. Click on "Cancel Subscription,

  5. Follow the pop-up to confirm. 

You should check if is there a need to delete Hulu from any connected services. You also check how I cancel my free trial on Hulu for detailed information.