Changing country
I’ve cancelled my Apple Music subscription as required (silly) and still can’t change my country. How do I proceed?
iPad Air, iOS 12
The subscription will still be active until the end of the billing period, If you contact apple they can cancel it immediately.
From:
Change your Apple ID country or region - Apple Support
Contact Apple Support
If you can't complete any of the steps, can't change your country or region, or you have less store credit than the cost of a single item, contact Apple Support.
Good luck!