Any person who is damaged by any act prohibited in RCW 77.15.210 may bring a civil action to enjoin further violations, and recover damages sustained, including a reasonable attorneys' fee. The trial court may increase the award of damages to an amount not to exceed three times the damages sustained. A party seeking civil damages under this section may recover upon proof of a violation by a preponderance of the evidence. The state of Washington may bring a civil action to enjoin violations of this section.