Advocate Aparna Bhat, who represented acid attack victim Laxmi Agarwal in court, is upset with the Deepika Padukone-starrer "Chhapaak" and has threatened to take legal action against the makers of the film. "Chhapaak" is based on Laxmi's life, and Deepika plays a character based on Laxmi in the film. Bhat's contention is the filmmakers have not given due acknowledgement to her in the film's credits.