S.C. Code Ann. § 58-11-130: Abandonment of service.

No radio common carrier shall abandon all or any portion of its service to the public, except for ordinary discontinuance of service for nonpayment of lawful charge, or except for violation of rules and regulations approved by the Commission, unless written application is first made to the Commission for the issuance of a certificate and until the Commission in its discretion issues such certificate.