Generally when people have a house cleaner they know who it is and have some form of relationship with them that establishes a baseline of trust. That would not exist here.
Eh, there's no reason why you can't choose your robot's teleoperator(s). Say the company has a page where you can check their profiles and even communicate with them.
And if robot companies were prepared to drop the pretense of robotic autonomy and sell you a by-default teleoperated robot service instead, you could always directly communicate with your robot's teleoperator while they're doing their job. Just talk to the robot, and the teleoperator replies, yes?