Every company provide best tariff for exiting customer. If it make happy to existing customer then it is a good to promte them for new customer.
But in BSNL it always promote new customer for which it loose existing customer.
It s new broadband plan 1199 for unlimited internet and calling is only a display contain. Here internet is only a doll, it is not working correctly then u do not pay 1199+ tax to them for only call.
So beware from fraud.