law: The Consumer Protection Act, 2019
  16. Power of District Collector.-
  The District Collector (by whatever name called) may, on a complaint or on a reference made to him by the Central Authority or the Commissioner of a regional office, inquire into or investigate complaints regarding violation of rights of consumers as a class, on matters relating to violations of consumer rights, unfair trade practices and false or misleading advertisements, within his jurisdiction and submit his report to the Central Authority or to the Commissioner of a regional office, as the case may be.