Welcome Smudge - and good morning (early riser too !). Yes it can be very frustrating to argue with JWs. They ignore anything you say or ask, and give you canned answers to all your valid and researched arguments. They refuse to read anything that's not a Watch Tower publication.
I had a heated discussion once with them about God's name also. They want you to accept as truth anything they present to you and they refuse to listen or consider anything you say that could bring doubts into their well rehearsed and memorized presentation. They live in their own little dream/fantasy world....
Is your husband an "active" JW ? Does he want you to "convert" ?