Issues with my therapist?

I went to a therapist over personal issues, but also shared some relationship issues; my partner recently shared he has some addiction problems with me, it’s caused lying and trust issues and has been hard.

He scheduled an appointment with my therapist as well. We called and verified it would be okay. However, the day we arrived, they had cancelled his appointment and kept mine, saying it was a conflict of interest and scolded him for not sharing our relationship info when he made the appointment. (We shared this info when we called back)

I’m pissed. I feel like they are judging him and not interested in helping. I also notice during my appointments, my therapist seems to always be against him. Maybe she has a sensitive history to the subject or is sexist, I’m not sure. Should I find a new therapist, or office? I feel like they are being unfair to him for no reason, he’s my fiancé and a good person regardless of his addiction. He deserves help like everyone else.