Reasons the actors give are that they were narrated a script that is altogether different from what has been shot. According to one of the actors, few characters were brought in the film while shooting which were not mentioned in the initial script of the film that was narrated to the actors.
Actor Ashmit Patel's role was also brutally chopped. His climax shot of three days were yet to be scheduled, but later he was told that there is no need for the climax sequence at all. How and why this conclusion was drawn was not explained to the actor.
Was it really tough for the producer to convince Ashmit Patel, Tulip Joshi and Anubhav Anand for multi-starrer film!