Sometimes my emotions get the better of me. I can be irrational, loud, upset, ect. I say things I mean, and I say things I don't always mean. Sometimes I get myself in trouble because I have never been heard, so when something is important to me, I need to be heard. If I don't, I feel as empty and lost as I did during the abuse.
I would hope, given that your T was abusive, he would understand that you come from an angry, painful place. That you're standing on your own two feet and refusing to be his victim. He might not acknowledge your feelings, and his role in causing them, but being a T, I again would hope he goes home feeling like crap. If he wants to protect himself, he shouldn't take this further. If he does, continue to stand your ground. He's done the opposite of what he should have, and he shouldn't get away with it.
My abusers got away with everything and I know walking away from them was difficult, but trying to fill the gaps they caused has been harder. There is no way to walk away and feel nothing at all because there are emotions attached, you have every right to be angry, upset and to tell him exactly how he made you feel. Anger can prevent us from being rational, logical and polite; but in this situation, your anger let you express yourself rather than keeping it bottled up. You told him you were angry, he knows it now, and if he has any compassion at all, he'll leave the phone calls alone and won't take it any further.

I wish you all the best. x