Once again you are trying to reverse what the Bible teaches. Looks like some people will never learn the truth.
Since Peter made it perfectly clear that their sins cold not be remitted until the repented, and that they could not received the Holy Spirit until they repented, what makes you think that they were regenerated before they received the Holy Spirit? That would be completely contrary to Gospel truth.
Only those who repent and believe receive the Spirit, and only those who receive the Spirit are born again (John 1:12,13). Regeneration is the supernatural work of God the Holy Spirit within the person who obeys the Gospel. And it is the Gospel which is the *incorruptible seed* of the New Birth (1 Peter 1:23-25).