I love that this question was being asked as far back as the sixth century and it is still brought up today. What a good answer I have now thanks to that African author!As individual men who received the Holy Spirit in those days could speak in all kinds of tongues, so today the Church, united by the Holy Spirit, speaks in the language of every people.
Therefore if somebody should say to one of us, “You have received the Holy Spirit, why do you not speak in tongues?” his reply should be, “I do indeed speak in the tongues of all men, because I belong to the body of Christ, that is, the Church, and she speaks all languages. What else did the presence of the Holy Spirit indicate at Pentecost, except that God’s Church was to speak in the language of every people?
Sixth century African author, sermon excerpt