In second week of sept, 2007 unfortunately I, opted for a postpaid connection of Airtel and given connection no 9760002124 in Dehradun at given address 3, New Road. Within two weeks I got a call to pay Rs 688 as my due. I asked the caller to send me the bill at the given address, caller replied ok. Then time and again callers from Airtel kept on asking me to pay the amount without giving me any bill. Now since yesterday they have disconnected it. I will never in future opt for an Airtel connection as so many service providers are there in the market with better options.