Hi Vge, I'm sorry he continues to send those kinds of messages. What I would encourage you to do is think about the impact you allow him to have on your life. You continue to be affected by the messages he sends and your kids see that. Actually, that needn't be the case and if you so choose, his messages can be like water off a ducks back and you can respond briefly and pleasantly back.
So, I guess I'm saying - don't look for him to change - change yourself. Have a look at the drama triangle as your posts tend to read that he is an aggressor and you are a victim. You can change that dynamic if that's what you choose to do.
As for his complaints about non-responses, I would go for brief and pleasant, if a reply is needed...
Take care and I do hope things improve for you
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus