The Prophet of Allah, sallallaahu ‘alayhi wa sallam, ordered anyone who has a servant or slave that does not suit him to release that slave, that way, the difference in personalities does not cause the owner to be unjust to his servant
Abu Tharr (a Companion) said: “The Messenger of Allah, sallallaahu ‘alayhi wa sallam, said:
‘If any of you has a servant that suits you, let him feed him from what he eats and dress him from what he dresses. However, if the servant does not suit you, then sell him, and do not torture Allah’s creation.’”
Based on that, if anyone has a driver or maid who does not suit him and they are not in harmony, then he should just release him, that way he does not fall into injustice towards that driver or maid, and does not harm them either.