You are very sweet and by your nature cannot help but try to be diplomatic and accommodating. We love you for that, we do.
However, you know your H is not really confused -- is he? No, he is trying to cultivate this confusion -- as a passive-agressive tactic -- so as to be able to finagle what he wants out of you.
I would just simply continue to calmly state the schedule to him, over and over and over to him each time he raises the issue. "I will pick up D9 on Tuesday, as always. You will not pick up either of the children until Friday Night." End of story. Keep drilling that into him, and leave no wriggle room. You don't need to continue to explain the rationale for why the schedule is the way it is, nor do you need to remind him about his L if he wants to dispute this. He's a big boy and he should be able to take a hint. All you need to do is remain your same calm, sweet self and hold the line.
Hang in there, lady. You're doing fine -- don't let him fluster you.
