(7) Every notice, process or proceeding which under this Act may be given to, served on or taken against any company may be given to, served on or taken against the principal officer, and if at any time there is no principal officer, then any such notice, process or proceeding may be given to, served on or taken against any officer or person acting in the management of the business of the company or as agent for the company and such person has the same liability in respect of that notice, process or proceeding as the company or principal officer would have had if it had been given to, served on or taken against the company or principal officer.