Services of Vodaphone & Airtel both , are hopeless. There are too many call drops, Network is not available many times, Network keeps on coming & going. They say it is a problem with your instrument. This is not correct. when an SMS is sent, the money is deducted immediately, & the message remains "PENDING" not for minutes or hours but for DAYS. If the message is resent, money is deducted again. The recipient never receives the message. Please give a provision for NEGATIVE rating. These people are only looters.