Im using Aircel since one year in Mumbai and found that its better then any other company in terms of charges & plans. No incident of cheating at all. Once my money deducted by technical problem but they refund it within 24-hrs.
Even amount of failed online recharge was credited in my A/c in two days. Plans are just awesome. Docomo is also not that much good. Net speed is great as all know.
Last but not the list, you have self-care service by dialling *133#.