My church is not letting us dedicate our baby

We currently go to a Baptist Church and they are having a baby dedication ceremony next Sunday, which we have been signed up for for two months now. But I got a call this morning saying that my baby cannot be dedicated because we are not members of the church. (my husband and I are getting baptized the following Sunday and are going to be voted as members of the church at the next member meeting.) is this un-biblical? Jesus says in the book of Mark to bring the children to him, and he rebukes his disciples for keeping children away from him. When Hannah dedicates Samuel to the church. there is no law that says that she needs to be a member of the church/Synagogue.

Should I call my church out for this un-biblical behavior or should I leave it alone?