Shankar‘s Robot is in deep trouble. Aishwarya Bachchan calls it off after Shankar failed to keep his words of completing the film on a specific time limit. Shankar has signed Ash with Rs. 4 crores and planned to shoot for over two years. Ash is not willing to devote two years time to a single film and hence asked Shankar to complete the film in a specific time frame. But Shankar wished to extent the shooting to two years and therefore Ash walked out. Talks are going on to finalize Deepika Padukone for the film. Aishwarya was delaying Rohan Sippy‘s film Happy Birthday opposite John Abraham for Robot but now that she had opted out from it she is in talk with Rohan Sippy to start the project. It will be directed by Sriram Raghvan. The shooting of Happy Birthday will start from October as John is busy with Kabir Khan‘s film for Yash Raj Productions. By signing Robot at a whopping price, Aishwarya became the highest paid actor in Bollywood but now that she had called it off, her value again falls down. Robot is a sci-fi film and Ash had been cast opposite her hubby Abhishek Bachchan and Tamil superstar Rajinikanth.