You are not going to like what I say.
If you no longer want any sort of relationship with this person, you're fine. I would never trust you with anything again, because it's petulant and borders on childish ("in the real world" and "Good day to you, sir"). You start off blaming the other person and I would assume that it's your typical way to operate.
If you DO want to make things better, scrap all of this and say "There have obviously been some communications mis-steps along the way, and I would like to talk to you face-to-face to resolve this matter. I'd like to present why I did what I did and let you know what I was thinking at the time, and hear your suggestions on how you think we can avoid any recurrence. I'm sure that if we talk in person, we can avoid the pitfalls of communicating by e-mail and we can move forward."
And if you have already lost your job over this, is there a point in poking the dead beast with a spear? Just walk away.
Student or Learner