“STRATEGIES TO REDUCE CUSTOMER COMPLAINTS AT A TELEPHONE SERVICE PROVIDER IN THE KINSHASA REGION, DEMOCRATIC REPUBLIC OF CONGO” (2014) Singaporean Journal of Business Economics and Management, 3((1), pp. 50–76. Available at: http://www.singaporeanjbem.com/index.php/SJBEM/article/view/107 (Accessed: 30 June 2026).