Mekanisme Penanganan Customer service terhadap Complaint Nasabah (Studi Kasus pada Bank Sumatera Utara Cabang Syariah): Customer service Handling Mechanism for Customer Complaints (Case Study at North Sumatra Bank Sharia Branch). Experimental Student Experience, [S. l.], v. 1, n. 1, p. 41–47, 2023. DOI: 10.58330/ese.v1i1.120. Disponível em: https://jurnal.institutsunandoe.ac.id/index.php/ESE/article/view/120. Acesso em: 10 feb. 2026.