In a blistering attack on West Bengal chief minister Mamata Banerjeee, Prime Minister Narendra Modi on Sunday said “speed-breaker Didi” has applied brakes on several schemes of Centre. While addressing a public rally in Cooch Behar, the prime minister said the West Bengal chief minister has shattered the dreams of people. "Didi has maligned Bengal with Saradha Scam, Rose Valley scam and Narada scam. I want to promise you all that this Chowkidar (Modi) will seek answers for each and every paisa looted," he said.