DBD your husband is a huge child at the moment and is having a childish outburst. The only thing I think was missing from his text is 'nah, nah, nananah'.
However you are STILL letting him to do this to you.
I can't understand why you are asking him for money when you know the response. It's as if you WANT him to be mean to you.
You need to go to a lawyer tomorrow (or today) and get this sorted. Get the financial support agreement sorted out as soon as possible. Not next week, not when you feel up to it. Now. He is NOT going to give you any money as he STILL has the power and control over you. The REASON he has that power and control is you HAVE LEFT HIM WITH IT. Take that rug out from under him NOW, pull it away, burn it, get the financial support, get your mortgage paid and then you can deal with everything else.
When the control your H has over you has gone, so will his power. When that goes you may finally start to see some changes - those changes may be to the good or the bad, but they will be changes. At the moment everything is stagnating. He is nasty, you accept it, and the mortgage doesn't get paid. Then we start again.
Break the circle. Stop the bus. Stop the train. Stop the roundabout. Get off. Say no more. File for financial support. Get the mortgage paid. IGNORE HIM until he starts acting like an adult. Then you can worry about the M, R or anything else later.
While I remember, I think you said earlier that he told the kids he was going to take them on New Years Day? That is not how this [censored] works. He ASKS you if that would be okay - he is still the children's father but they reside with you. You decide day-to-day matters NOT him. HE communicates with you, NOT with the kids. If he wants to start playing the kids card, pull that rug our from under him as well. He isn't paying any CS for them so is a pr*t not a father. Men like your H make me want to smack somebody, they really really do. I spent 7 years fighting to see my D while fathers like him get handed on it a plate and can't be ar$ed even participating.
It's time to play hardball DBD. Time is today. Now.
Me 36, W 34 | D 8 | M 3.5y Sep 2Aug09 | Left 6Sep09 | OM in 10Oct09 | NC 17Nov09 | Gave up caring - Jan 2010
"Have integrity. Do what is right, not what is expedient." "Delay is the antidote for anger"