The commission may, at any time, by its order duly entered after notice to the holder of any certificate issued under this chapter, and an opportunity for a hearing, at which it is proven that the holder has willfully violated or refused to observe any of the commission's proper orders, rules, or regulations, suspend, revoke, alter, or amend any certificate issued under this chapter, but the holder of the certificate shall have all the rights of rehearing, review, and appeal as to the order of the commission as is provided for in chapter
34.05 RCW.