All that sounds very unfair from your therapist. It would make me very upset and I definitely would not allow it and would refuse to pay for extra time that was not asked for and was not agreed upon. It does not sound true that he did not pay attention to the time at all -- he definitely paid enough attention for his own benefit. I would definitely be very vocal about this and would start to manage the time myself if I wanted to stay with him.

It also sounds like he pushes his own agenda with the goals etc. That is also something a therapist should not be doing, they should provide the service they are asked.