JetBlue cancelled our kids flights without telling us
I understand the frustration. Im five minutes from LGB and know how easy it is. But if youre not willing to connect then there's nothing the airline can do for you except refund your money. Try to put a positive spin on it, you'll get $100 B6 credit per LGB/ORD leg, $200 per kid if I read that right. Rebook the kids on VX out of LAX, they'll love it.
Your email to Customer Service is too long and too emotional. And also too soon if you haven't contacted them by phone yet. Keep your message simple, stick to the facts and the to the issue at hand (you want your money/points back). Tell them what the problem is, and what you're seeking for resolution.
If you really want them to change their email titles/policies then do that separately.