Building Work Incomplete Even After Possession

Before I proceed with my query I want to inform you that mine is a freehold builder floor in Delhi and does not fall under RERA. I got my old building collaborated with a builder who in return will demolish my old building and rebuild a new one. In return the builder will take one floor and another floor will belong to me. Now After the possession of flats I found that most of the works in the flats are still incomplete or faulty. I have informed the builder many times about this and he says he will get them done. But all these works are still pending. However, the one floor which belongs to the builder which he sold to some other party, he is getting works done in that flat but not on my floor. For the above issue, do I have to go to the consumer court or regular courts. Is there any relief possible? How would a regular court fee be charged in this case by the court and the same for in case of consumer court.