A company owned by KD Singh, a Member of Parliament from Mamata Banerjee's Trinamool Congress has been given three months to wind up a scheme through which it collected over Rs. 1,000 crore in the last five years from small investors across the country. Every investor is meant to be refunded by Alchemist Infra Realty Limited, part of the gigantic Alchemist Group, of which Mr Singh, 51, is chairman.