I fail to see how any of this invalidates his point that you never sent the board, it is inexcusable regardless of how you feel about previous actions.
You have been paid for an item and you have not shipped it.
You even resort to calling people names in private because of how he is putting this in public yet I remember maybe 5 people telling me (including Will) that you are hard to contact.
I once tried to buy an xpower from yourself and you either dropped off the face of the earth, ignored me or as everyone else said, you don't respond to PMs.
I find it disgusting that you think you are in the right because of what happened in completely irrelevant situations, do you believe you don't have to send the board because he "deserves" it or because you believe yourself to be better than him because you did all this for him and thus he isn't worth your time?
I think the solution here is a full refund or he should take it to his bank and tell them he never received the item he paid for after trying countless times to contact you
Learn to accept your mistakes