How do I cancel out of my free trial of iTunes?
How do I cancel out of my free trial of iTunes before I get charged after 30 days? Where do I have to go to unsubscribe or cancel?
[Re-Titled by Moderator]
Since you say 30 days and not three months I would guess you are not talking about Apple Music but a subscription to an app downloaded from iTunes? If so please see:
View, change, or cancel your subscriptions - Apple Support
If in fact you are talking about Apple Music please see