The terms of the community services commissioners shall be four years, with three terms commencing as of the first day of January of each even numbered year not divisible by four and four terms commending as of the first day of January of each even- numbered year divisible by four. Any vacancy in the office of the community services commission caused by any reason whatsoever, shall be filled by an appointment by the council, such appointments to coincide with the terms of office specified by this section.