The quality of relationships and the ability of Civil Service of Call Center Customer Satisfaction in PT 123. PLN (Persero) Central Java Distribution & D.I. Yogyakarta - Hildawati, Restuari; Jurusan Administrasi Publik (Jurusan Administrasi Publik, Fakultas Ilmu Sosial dan Ilmu Politik, Universitas Diponegoro, 2012)