I still tell the plumber what needs to be fixed.
Setting an appointment time is the same with the plumber as with the cleaner; neither of us can impose a time on the other, we have to negotiate a time that suits both of us. If I tell the cleaner to come Wednesdays from 9-1, and she’s busy then, I can’t make her come. And if the plumber tells me she’s available Tuesday between 11 and 4 and it doesn’t work for me, she can’t make me accept it. In both cases they tell me when they’re available, I tell them when I’m available, and we either find something that works for both or I look for someone else.
And what about the personal trainer, massage therapist, piano teacher, gardener, etc? The relationship is the same with all of them. So why is the cleaner different?