The Effect of Service Quality And Complaint Handling on Cutomer Loyality of Bank Syariah Indonesia Regional IV Jakarta 1. JISIP (Jurnal Ilmu Sosial dan Pendidikan), [S. l.], v. 9, n. 2, p. 483–488, 2025. DOI: 10.58258/jisip.v9i2.8257. Disponível em: https://ejournal.mandalanursa.org/index.php/JISIP/article/view/8257. Acesso em: 20 jun. 2026.