You never have to answer the phone. I would let it go to voicemail and get back to him when you are in a a more relaxing state.
THIS!!!
I trained my ex to contact me by email. If he called, I let it go to voice mail, then texted him back. If he texted, I replied with an email. If I took his call and he started to spew, I would slap my old flip phone closed. If he called back, I'd text- "sorry, I'm in a cell phone hole".
BTW it's good to keep contact to texts or email so you have a copy of what was said - this can hep you sometimes in the divorce. And never promise him anything. Just tell him you'll think about it, or you'll discuss it with your lawyer.
Btw, I forget - have you moved half of the cash into a separate account in your name only?
