Recovery of tax from third parties.

(1) The Commissioner or any other authority prescribed may at any time or from time to time, by notice in writing (a copy of which shall be forwarded to the dealer at his last address known to such authority) require any person from whom money is due or may become due to the defaulter, or any person who holds or may subsequently hold money for, or on account of the defaulter, to pay to such authority, either forthwith if the money has become due or is so held, within the time specified in the notice but