If you want to book a complaint regarding your Bsnl landline or broadband, you need to call 198 from any landline or 1500 from any Bsnl mobile. Follow the instructions from the customer care and register your complaint. A Bsnl employee will come to house or office within 24hrs.
For faster service, always book the complaint around 9am in the morning. Normally, Bsnl technical staff will collect the list of faulty numbers from exchange when they sign the register at 9.30am. So if you book the complaint around 9am, your number will be among the first few numbers and you will get faster service. If you are registering the complaint after 12.30pm, they will not take up the case until the next morning.