Toll Free: 1800 345 1500 (Landline - from other operator mobile or Landline),1800 180 1502 (WLL / CDMA),1800 180 1503 (GSM Postpaid / Prepaid),1800 345 1504 (Broadband Complaint Booking),1800 425 1957 (BSNL - For MPLS & Other Data Services),1800 425 7007 (Enterprise Services - MPLS VPN / ILL / MNS / Bulk SMS / Dark Fibre etc),1909 (DND from Landline / Mobile),1500 (Landline/Broadband) ,1503 (Mobile),94821 57007 (SMS Other Operators)