Your response is a simple one:

"- You're right I am avoiding you,
I really don't want to be around you anymore, I'm tired of you: you're immature, boring & unattractive and I need less of that in my life.
Another thing, please don't speak for me, I want my kids, I'm their father, we arranged & you agreed to have
them 1 week each, this is your week, deal with it.
Next week when I have them I will deal with it and I won't be bothering you for help trust me.
As for money, you have money, you're saving up for a trip to vegas and you're buying a gift for a baby shower - don't bother me about money - if you can do those things, you can take care of the kids. You shouldn't of had kids if you didn't want to be a parent. Not my problem, I enjoy being a parent.

Tell the kids daddy loves them and can't wait to see them next week.

Thank you!"

- and that's it.