Nintendo’s official customer support in Japan has announced that they have stopped receiving inquiries by telephone as of January 24, 2020.

After a building inspection is complete, services will resume from January 26, 2020 1pm JST:

恐れ入りますが、ビルの設備点検のため、1月26日（日）の「お問い合わせ窓口」電話受付時間は13:00からとさせていただきます。あらかじめご了承ください。 https://t.co/VFvU0YLpmu

— 任天堂サポート (@nintendo_cs) January 24, 2020

Thanks, Brandon.