I have a bad experience of BSNL broadband service in terms of speed and other services.
Internet Speed - Speed of internet is very bad and fluctuating. All plans have fix usage plan after some usage speed is 1 Mbms. So it cheat in Speed.
Connection Reliability - Not proper reliable of connectivity and call to customer care every time.
Service & Support - It has a bad service providing system. Most executives are less knowledgeable.
I do not recommend BSNL broadband.