Union Minister VK Singh’s wife Bharti Singh has filed a police complaint here against a man alleging that he was trying to extort Rs 2 crore by blackmailing her with “doctored” audio-video clips to defame her husband. In her complaint lodged at Tughlaq Road police station, Singh alleged that Pradeep Chauhan, a resident of Gurgaon, had even threatened her of “dire consequences” if the money was not paid.