Complain on twitter as well as on bsnl pg portal and tell them to change line speed profile to 10 or 12 mbps. They will most likely change it.I got some help from my friend who works in bsnl, below is my settings from their end , whatever the plan we have the profile they set is low. For 10 Mbps plan, they set it to 6 Mbps.
@ksuresh92 what profile they have set can you tell me that you are getting exactly 10mbps please tell me. I get max 8mbps on 10 mbps plan.