Why don't you tell us when the Church was born then, if not on the day that the Holy Spirit filled the Apostles and gifted them with tongues, and brought about the conversion of 3,000 on that day? Keeping in mind, that the Church is the temple of the Holy Spirit of course.
Pay attention to the details, of the book:
Acts 2:47 KJV Praising God, and having favour with all the people. And the Lord added to the church daily such as should be saved.
This church already existed-"added to."
There is more than 1 church, in the book. The above church, is not the church in this dispensation, the body of Christ.