S.C. Code Ann. § 58-9-1080: Filing of petitions.

The Office of Regulatory Staff or any person or corporation having an interest in the subject matter, including any telephone utility concerned, may petition in writing to the commission, setting forth any act or thing done or omitted to be done by any telephone utility in violation, or claimed violation, of any law which the commission has jurisdiction to administer or of any order or rule of the commission.