17. The free line service adds to the other services that are available for citizens and residents to communicate with the organization, whether in person, through its website, through its official pages on social media (nihrbh), or through the mobile application (NIHR Bahrain). Through the call center, the NIHR responds to any complaints, provides assistance, and answers any other human rights inquiries. Total number of cases received through the hotline (new or previous complaints) for the years (2017-2019) Year 2017 2018 2019 Total Number 508 1250 1227 2985 Ninth: Branch of the National Institution for Human Rights in the Migrant Workers Protection and Support Center 18. The NIHR opened an office in the Migrant Workers Protection and Support Center, affiliated to the National Committee for Combating Trafficking in Persons. This Office will link the NIHR and the residents with the aim of reaching the highest levels of promoting and protecting expatriate workers, as it is authorized to receive complaints from them related to human rights. The Office examines and reviews the complaints and refers them, as the NIHR deems appropriate, to the competent authorities with effective follow-up, or advises those concerned on the procedures to be followed, assists them in doing so, or helps to resolve complaints with the authorities concerned. 45