Remove credit to change store region

Buy something more expensive than your balance and use a different payment method from the current region for the extra amount; if you can't, click here and ask the iTunes Store staff to zero it.

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If you have a balance, you’ll either need to spend it or if it’s not enough to purchase a product or service, you’ll need to contact Apple Support to have your account set to zero. If you’re in the US please call 1-800-MY-APPLE or outside the US, consult the support article below.

Contact Apple for support and service - Apple Support

Change your Apple ID country or region - Apple Support

I have to change my apple store region and country there is no option of country and region to change my country