How do I cancel my free trial of Apple Music

Manage your Apple Music membership - Apple Support - https://support.apple.com/HT204939 - This only turns off the autorenewal process. If you must have the entire subscription canceled before the trial period ends you will have to contact Apple: iTunes Support - Use this form for assistance with account and billing, code redemption, or purchase questions - https://www.apple.com/emea/support/itunes/contact.html

or Worldwide iTunes support - https://support.apple.com/country-selector/itunes