(1) By mandamus or other suit, action, or proceedings in any court of competent jurisdiction to enforce his or her, or their rights against the City, the City Council, the Board of Light Commissioners, and any other proper officer, agent, or employee of any of them, including the right to require the City, the City Council, the said Board, and any proper officer, agent, or employee of any of them, to fix and collect rates and charges adequate to carry out any agreement as to, or pledge or revenues, and to require the City, the City Council, the said Board and any officer, agent, or employee of any of them to carry out any other covenants or agreements and to perform its and their duties under this article.

(2) By action or suit in equity to enjoin any acts or things which may be unlawful for a violation of the rights of such holder of bonds.