You seem to think Calvinists are unaware that there is such a thing as those who refuse to repent:
“You stiff-necked people! Your hearts and ears are still uncircumcised. You are just like your ancestors: You always resist the Holy Spirit! Was there ever a prophet your ancestors did not persecute? They even killed those who predicted the coming of the Righteous One. And now you have betrayed and murdered him— you who have received the law that was given through angels but have not obeyed it.” (Acts 7:51-53)
Some curse the light and flee to the darkness, others receive the grace of God in Christ. Yet it is God who gives us that light which is the glory of the only begotten of the Father:
He came to that which was his own, but his own did not receive him. Yet to all who did receive him, to those who believed in his name, he gave the right to become children of God—children born not of natural descent, nor of human decision or a husband’s will, but born of God. (John 1:11-13)
Every aspect of salvation is a gift of grace, of course you must repent or perish, I've seen no arguments to the contrary from anyone in this thread. You receive repentance, of course there is a choice, who says otherwise? But you don't achieve repentance, you receive it as a gift of grace. In and of yourself you have no ability to do so or Christ died for nothing (Gal. 2:21).