The principal office of the company, formed under La. Rev. Stat. 45:387 and 45:388, and branch offices, may be established at a place in or out of Louisiana as the board of directors may determine, for the convenient transaction of business, and meetings held there and resolutions adopted are lawful and binding.  However, an office shall be maintained in Louisiana, where citation may be served, and the company shall always be represented at that office by an officer, agent or employee, upon whom service can be made.