I'm sorry you're going through this! There has to be a better T out there for you..... some T's are much better trained (and maybe more emotionally healthy

) than this T seems to be.....I think anyone who is invested in their therapy and in becoming healthier would feel hurt, confused and betrayed by this dude's behaviour. As a professional he shouldn't behave this way.
What I would do is tell him next time you see him that this session is the last time you will see him. And try to make that session as good a termination session as you can. As he changes his mind on such a regular basis I would find it confusing and scary too (not to mention unprofessional IMO) By you making the decision to terminate, you will be taking your power back.
(((((((((((((( ErinBear )))))))))))))))