If a customer has a complaint or a grievance, the customer can Contact:705-0089~558- to the Customer Support at 7050 089 558 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:If a customer has a complaint or a grievance, the customer can Contact:705-0089~558- to the Customer Support at 7050 089 558 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: