You could say that, I’ve left due to your ongoing abusive behaviour and I won’t be coming back… plus your solicitor or a third party (relative) will be in touch to discuss the children and the house. A third party that can act as a go between via email? I would have zero direct contact with him. If you allow contact he will just bombard you with his mind blowing dysfunction which will upset you. Then change your mobile number. Don’t engage in a direct conversation with him.