We are not sure what you are asking, but it sounds to us as though this man, though he agreed to get properly baptized, had neither repented nor believed, both of which are prerequisites of baptism. This is why you never saw him again. We believe that in our zeal we sometimes push people too hard to get baptized, as though that is the only thing that matters. Before anyone is baptized at our assembly, we do our best to determine if the person has really repented and really believes. We have occasionally refused to baptize a person because of some obvious sin that he was not willing to give up. We may be hurting more than helping when we baptize people who have not really bowed the knee to the Lord Jesus.