Aircel, BPL Mobile and Vodafone are the top three cellular service providers in India, even as telecom subscribers are unhappy with customer care services of various operators, a survey says. According to IDC India’s India Mobile Services Usage and Satisfaction Study, 2007, the average waiting time to speak to a customer care executive is 5.7 minutes, the highest in the past three years. Customers are also bothered by the “knowledge level and promptness” of the customer care executives and the “final solution” provided by them