Toll Free: 1500 (Landline/Broadband),
1800 11 3435 (Toll Free Services),
1800 11 1503 (Consumer care/complaint center no. for GSM),1503 (Mobile),1500/22221500 (Mtnl Just Call ),1661 (Billing Assistance),1909 (DND Registeration),
011-23356666 (Public Grievance Cell)