Shimla, Jan 5 (ANI): Himachal Pradesh Chief Minister, Virbhadra Singh on Sunday denied all charges leveled against him by BJP leader and former state chief Prem Kumar Dhumal saying that it is all frustration that is coming out as Dhumal thinks that Singh is responsible for his defeat in the state. Earlier on Sunday, Dhumal had leveled corruption charges against Singh and had demanded his resignation from the CM's post.