Recital (81)

Each supervisory authority should handle complaints lodged by any data subject and should investigate the matter or transmit it to the competent supervisory authority. The investigation following a complaint should be carried out, subject to judicial review, to the extent that is appropriate in the specific case. The supervisory authority should inform the data subject of the progress and the outcome of the complaint within a reasonable period. If the case requires further investigation or coordination with another supervisory authority, intermediate information should be provided to the data subject.