You can purchase a stun gun on Amazon for $10 including shipping. You can add pepper spray for a total of $14 total. Wasp spray also acts the same as pepper spray.
I undersand you said you give up financial freedom if you go to your moms. What do you have now? Craziness is all this is. I cannot even imagine how it has to and will affect your children. Your life is in danger, I truly mean that. You need to go file a restraining order and go to the local safe house and let them help you.
Please keep yourself and your children safe.