T once forgot about our session. I waited a bit more than 25 minutes before he showed up, visibly distressed. I had intended to leave after 30 minutes.

I've waited up to 2hours for normal doctor appointments though... Just for the secretary to show up and tell me that the doctor still hasn't shown up and probably overslept. The doctor didn't bother to apologize the next time I saw him. I dumped him after that.