When a complaint is received, the Commission may: Conduct an ex parte investigation; Issue a satisfy or answer order to the public service company complained of, in a manner prescribed by the Commission; or Dismiss the complaint if it fails to state a claim upon which relief can be granted. If the Commission issues a satisfy or answer order, the public service company shall respond within 20 days or a time period prescribed by the Commission. A public service company shall promptly notify the Commission if it satisfies a complaint before the time allowed in a satisfy or answer order. After investigation or expiration of the time allowed for satisfaction or answer, the Commission may: Determine whether relief should be granted based on the information submitted by the complainant and the public service company; or Conduct hearings as necessary.