ACTIVE subscription
I lost my iPhone and I had to make a new iCloud and get a new number. But I have a active subscription with Apple Music on my old iCloud account. How can I cancel the subscription
Question marked as
I'm not sure why you made a new Apple ID. You could have simply put your lost iPhone in Lost Mode and then (if you want) change your password. But in any case, now that what is done is done, as long as you still remember your old Apple ID & password, you can log into your old account from a computer and cancel it there. See the 'Cancel a subscription on your Mac' or 'Cancel a subscription on your Windows PC' sections in:
How to cancel a subscription from Apple - Apple Support