Please note that subscription management can only be accessed through logging into your account at 

Access your profile by selecting your account name in the top right corner:                  

Select "My Account" from the menu choices:                                                                                                                                                                                                                                              

Select "Billing Information" from the menu choices on the left:                                              

Select "Manage Subscription" from the billing subscription screen:                                                                                                  

Within "Manage Subscription" you can select the blue check mark next to Shuffle to unsubscribe:                                    

Upon unsubscribing, you will need to agree to the changes and confirm that you want to unsubscribe: