D.C. Mun. Regs. tit. 15, § 1899
1899.1 When used in this chapter, the following terms and phrases shall have the meaning ascribed:
Commercial Customer - a non-residential customer of a utility. Non-residential customers shall include electric customers served from the master-metered apartment tariff.
Complainant - a non-residential customer who files a complaint regarding utility service with a utility or the Public Service Commission of the District of Columbia.
Office of Consumer Services - that division within the Public Service Commission of the District of Columbia which has been designated to handle customer complaints against utilities in accordance with this chapter.
SOURCE: Final Rulemaking published at 33 DCR 1925, 1934 (March 28, 1986).