All acts of executive actions done, decisions taken, actions done, proceedings taken and orders passed, prior to the appointed day, by the Central Government, by any officer of the Central Government, or by any other authority, with respect to assignment of spectrum or provision of telecommunication services, or telecommunication network or establishment of telecommunication infrastructure, in the belief or purported belief that the acts done, decisions taken, actions done, and proceedings taken, were being done, taken or passed under the Indian Telegraph Act, 1885 (13 of 1885), or the Indian Wireless Telegraphy Act, 1933 (17 of 1933), shall be as valid and operative as if they had been done, taken or passed in accordance with law; and no suit or other legal proceeding shall be maintained or continued against any person whatsoever, on the ground that any such acts, decisions, proceedings taken were not done or taken in accordance with law