Should you wish to report a complaint or if you feel that Cardiff ARC has not addressed your concern in a satisfactory manner, you may contact the Information Commissioner's Office​: 0303 123 1113.
Os hoffech gyflwyno cwyn neu os teimlwch nad yw ARC Caerdydd wedi mynd i'r afael â'ch pryder mewn modd boddhaol, gallwch gysylltu â Swyddfa'r Comisiynydd Gwybodaeth: 0303 123 1113.