why does okoye go to okonoko's father after he receives his title?

He wanted the money owed to him. Okoye spoke for a long time using ancient proverbs to come to his point as was customary in the Ibo culture. He had come to claim payment of the two hundred cowries that Unoka owed him from two years prior so that he could fund the feast for acquiring his new title of Idemili, which was the third highest title in the land. Hearing Okoye's request, Unoka burst into laughter and pointed toward a wall of his mud house that was covered in chalk markings aligned in columns. It was a record of Unoka's debts and they were numerous. Unoka insisted that he would pay Okoye, but not until he'd paid his larger debts first.