Try following all steps mentioned below as per the hukomi website :

Those who feel their rights have been violated can file a complaint in person, online or through fax.
In Person
Visit NHRC’s office in Souq Al-Rawda, Salwa Road to file a complaint in person. Call 44444012 for directions.
Online
The option to submit a complaint online is available. Please provide reason(s) in the form why you cannot attend the matter in person.
Through Fax
To submit a complaint through fax at 44444013.
If you do not hear back from NHRC within three business days, please call 44444012 or visit the committee’s office.