You were so brave speaking up and telling him that it wasn't working for you. He's a s$#t for taking out his embarrassment and humiliation for not being something that he thought or believed he was as a professional. I'm so sorry you had to sit there and hear his blaming excuses! What an idiot. Don't believe one word that jerk said to you. He only demonstrated his ignorance, unprofessionalism and poor training, but I know that doesn't make the words he used any less painful. Take care of yourself.