I have a bsnl mobile. Once I tried to talk with their customer care center. Connected with "saying you are a valuable customer to us. please stay on the line". Later I came to know how valuable I am. I waited for some time hearing this. Finally the line was disconnected itself. I dialled again. Then a voice was heared saying "No enough balance to do a call". I astonished what was happened. Finally I came to know that they have a different customer care numbers. I assumed that I was lucky. that time the balance is only Rs.34 only. I tried the LL number that was billed. Is it our fault having not enough knowledge or their once not having a unique number or a number for free to all their services whether cell or LL.