Change Apple ID Country

Here are the rules for changing your country or regions.

Change your Apple ID country or region https://support.apple.com/en-us/HT201389See this heading especially What to do before you change your country or region

Use this link in the document if you need to View your Apple ID balance https://support.apple.com/en-us/HT202359

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. Note that you could just purchase something of value greater than or equal to the amount of your store credit or ask iTunes Support to zero out your account balance using this  iTunes Support Form https://support.apple.com/en-euro/itunes-contact

And you also can contact iTunes worldwide support via text or chat using this link https://support.apple.com/choose-country-region/itunes. At the bottom of your screen use Tell us how we can help to select among support options. You should be able to get telephone or chat support.

contact iTunes Support and ask them to completely cancel the subscription.      

iTunes Support – world wide        

You are welcome. You need to cancel all your subscriptions and they need to be expired before you can change.