Is it permissible for a disobedient son to perform Hajj on behalf of his father, while continuing his disobedience after Hajj?

Allah has commanded kindness to parents and coupled their right with His right. Many texts have also warned against disobedience to parents, and the Prophet, peace and blessings be upon him, considered it one of the gravest major sins. Whoever has been disobedient to their parents must offer sincere repentance, through remorse, ceasing the disobedience, resolving not to return to it, and seeking their forgiveness. As for Hajj, it is a righteous deed that is accepted, and no other sin affects it; rather, one must repent from all sins.