I would have felt the same way. I don't pay the therapist to not respond to what I bring to therapy. While I don't expect her to care deeply on a personal level that I am angry, she is providing a service and, unless she is ambivalent about retaining clients, should care about the discord on a professional level. My head would probably explode if I expressed anger at her and she just sat there smiling like an idiot. Sometimes she has said she doesn't know how to respond to something I am angry about, and I can work with that, but just saying it's ok wouldn't cut it. At all. And I would probably feel patronized that she felt she needed to tell me it was ok (although I know this could be helpful to people who have problems expressing anger).

Maybe the smiling and dismissing of your anger was a defense mechanism on the part of your therapist?