Exactly. What you do or don't pay should not come up as part of a response by the therapist unless, of course, you are specifically talking about the financial aspect of therapy. His words were defensive and perhaps validated your feelings of a lack of trust in him, the very concern you had to begin with. I know how difficult it can be to discontinue a therapy relationship but unless he is willing to talk about what happened, and take responsibility for his words and do so without being defensive and hurtful, I would strongly consider not going back. You deserve to be treated with respect.