BSNL Broadband — Delay in getting connection

It took more than 6 months for a BSNL phone connection to get to my home after applying for a broadband connection. After I got the phone connection, I was told that it would take only a weeks time to get the broadband. It has been about 2 months now!! Till date there has been no communication from BSNL's end about what has been done about my Broadband connection.

Whom do I contact in this case? Whom do I escalate this issue to? Please help