I would respond with a pick up and drop off time and place. There is no other response necessary. I would also have a Plan B and C in place in the very likely event that he fucks out.
He will reap what he sows. They forget that it isn't us they are impacting, it's the kids. They are merely annoying us and quite often we get used to not being able to rely on them for anything. It takes kids a little longer but they'll reach that place too.
I get this over sharing too. 'I have a board meeting' blah di blah blah bullshit bullshit .. so can you do X, Y, Z?".
I sometimes want to say "This is a yes/no situation. Keep the narrative to yourself."
But he gets crickets instead. Sad that the little petal still needs to overshare with an XW who doesn't really care if he lives or dies.
"Which you pay nothing for? You want a cookie?"
The sad clown pays for school (public school so only uniforms), daycare (ends at the end of 2015) before/after school care (minimal) and their portion of his health cover (minimal) out of his $250k+ income. He too wants cookies and likes to remind me of all the stuff he pays for.
I feel like saying a) they're cheaper to run than your whore, and/or b) you were forced to pay those or have CS increased to cover my portion of those costs. You'd be a deadbeat if you could and I fully expect you will be sometime in the next 14 years. Put away the trumpets - you are a Knight in Tin Foil.