Notwithstanding anything contained in any judgment, decree or order of any court or other authority, the sales tax on country liquor other than toddy levied or collected or purported to have been levied or collected shall, for all purposes, be deemed to be and to have always been validly levied or collected in accordance with law, as if this Act had been in force at all material times when such tax was levied or collected and accordingly (a) all acts, proceedings or things done or taken by any 832 authority or officer or person in connection with the levy or collection of such tax, shall, for all purposes, be deemed to be and to have always been done or taken in accordance with law; (b) no suit or proceeding shall be entertained, maintained or continued in any court for the refund of any tax as paid; and (c) no court shall enforce any decree or order directing the refund of any tax so paid.