Try a calm email saying you will meet him in Pizzahut next week.
If that doesn’t work I found the presence of my four very critical sisters, all at the same time very effective. Or no coffee or tea in the cupboard, no milk in the fridge and no biscuits in the cupboard worked.
Hoovering around his feet, drilling (putting up pictures) and turning off the heating (sorry, it’s broken) were also good.
Turning off the broadband, taking the fuse out of the tv plug… the list is endless. My ex got the message loud and clear. 😁