He said the Congress was behaving as if it had two-thirds majority.
Ram Gopal Yadav said his party, along with Left, Biju Janata Dal and Telugu Desam Party, had called a protest Sep 20 against recent economic decisions of UPA government.
He said NDA had also called a protest Sep 20.
West Bengal Chief Minister Mamata Banerjee Tuesday announced that the Trinamool Congress was withdrawing support to the UPA government, and its ministers would submit their resignations on Friday.
The decision was taken at a three-hour meeting of Trinamool leaders and MPs in Kolkata to protest against the hike in diesel prices and allowing foreign direct investment (FDI) in retail trade.