Thank you for your reply, and for your added info. There must be some small detail that requires attention. Thank you for your patience.
Re: "I have a credit wallet apple account, and I have payment from phone carrier and enough money."
You may want to check that your payment method is one that Apple can accept:
See what payment methods Apple Can accept in your country or region:
Payment methods that you can use with your Apple Account - Apple Support
If Mobile Billing from your particular provider is accepted in your country or region:
Eg: says (5) "Mobile billing is only available with supported service providers.
This list is subject to change. Find out more about service provider billing".
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Re: " .... purchase in the game store, and I confirm the purchase, but then I receive a message stating that the purchase cannot be completed and that I should contact customer support."
Contacting the provider of your payment method may reveal an answer.
The purchase may not be being approved by the provider of your payment method. If you have disputed a charge from Apple, (or the game's manufacturer ?) you may need to authorise your payment-method provider to allow payments to Apple again.
Sometimes laws change in a country, and / or your authorisation for international payments may be required in order for payments to complete.
Payment methods may also require a new expiry date, or another detail updated.
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Sometimes a certain game may just not be available in your country or region.
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Re: "I also can't connect with Capcom due to the fact that there is no choice of game to send a message of support"
Wondering if this Capcom support webpage for enquiries etc, may help you make contact: https://www.capcom.co.jp/ir/english/inquiry.html