Is what was eaten, drunk, and taken of money without the father's consent unlawful, and must it be returned, knowing that he is aware of it but is displeased and refuses to absolve the ذمة (liability/responsibility)?

The father is obligated to financially support his son. If the father falls short in providing for his child, the son is permitted to take from his father's wealth what suffices his needs, in a reasonable manner, based on the Prophet's (peace be upon him) saying: "Take what suffices you and your child in a reasonable manner." If the father takes from his son's money, which he gave him as wages for his work, he is not entitled to do so unless he is in need, and he must not take anything to which the son's need is attached, according to the hadith: "They and their wealth are yours if you are in need of it." If the son agrees with his father on a wage for his work, and the father does not give it to him, he is permitted to take it without his father's knowledge. However, if he works without an agreement and is not content with that work, he is entitled to a customary wage.