customer" has a complaint; or a grievance, the customer" can Contact. to the Customer Support at 0840.9850.997 or help@navi.com. ... Level 2: If the customer' Requests are not resolved or not give any satisfaction response they' can contact. at Grievance' redressal Officer's:-customer" has a complaint; or a grievance, the customer" can Contact. to the Customer Support at 0840.9850.997 or help@navi.com. ... Level 2: If the customer' Requests are not resolved or not give any satisfaction response they' can contact. at Grievance' redressal Officer's:-customer" has a complaint; or a grievance, the customer" can Contact. to the Customer Support at 0840.9850.997 or help@navi.com. ... Level 2: If the customer' Requests are not resolved or not give any satisfaction response they' can contact. at Grievance' redressal Officer's:-