Directors, trustees, and officers of mutual telephone companies, and the manager of a mutual telephone company who is the person most responsible for carrying out the policies and directives of the trustees, officers, or board of directors, are immune from civil liability for any act or omission relating to their service or function as a director, trustee, officer, or manager, unless the act or omission constitutes gross or willful negligence or gross or willful misconduct.
N.D.C.C. § 49-21-02.3