(a) The Public Utilities Regulatory Authority shall be responsible for receiving and acting upon customer inquiries and complaints regarding electric suppliers, as defined in section 16-1 . The authority shall establish a toll-free telephone number for such purposes. Customers of any electric supplier having complaints regarding disputed bills, terminations of service or adequacy of service may bring their complaints to the authority pursuant to any provision in section 16-20 , sections 16-262c to 16-262j , inclusive, or the regulations adopted to implement those sections.
(b) Nothing contained in this section shall be construed so as to restrict the right of any person to pursue any other remedy available to the person under law.