I have an Airtel add-on sim card. Airtel provides its existing post-paid customers with an additional sim card which could be given to anybody of the customers' choice. Mr. Ruchir Desai, Bangalore, was given one such card. He gave this card to me. He gets a consolidated bill.He is responsible for making the payments for his as well as my sim card. This is as per arrangement by Airtel. Since last year, when I took the connection, I keep getting calls from Airtel office, sometimes at odd times (like 8 in the morning) enquiring whether... read full review »