Bharti airtel is india largest telecom company. where I live, network coverage in that area is not full. I do not get full network in suburban area of south 24 pargana near new town. customer service of that mobile network is worst. sometime it cuts unwanted charges which is unknown to us. when we call to customer care they said that it is right charges. fustrating for us. charges and billing of this network compare to others is so high