| Business | Phone |
| Triangle Telephone 1350 Springdale Rd, Rock Hill 29730 | (803) 329-7183 |
| Triangle Telephone 2301 N Dave Lyle Blvd, Rock Hill 29730 | (803) 329-2698 |
| Triangle Telephone 2561 Cherry Rd, Rock Hill 29732 | (803) 329-2682 |
| Rock Hill Telephone Co 471 Lakeshore Pkwy, Rock Hill 29730 | (803) 326-6108 |