In our family we aer useing the services of tata,airtel& MTNL.My experiences:- Some time back I received a call from airte and the voice was not clear.I asked the caller to call after some time.But the caller was going on telling somthing and finally the call was disconnecte.Within minutes the balance was reduced by Rs.50/-.On enquiry I was told that I ofted for some services to be activated and henc the charge.I lodged a complient and an email with strong words.Within minutes I got my account credited. Lost week my son's handset was stollen in a Thane bus stop.Immidiately I tryed to contact Airtel custommer care centre to deactivate the Zim card but airtel was goining on playing the music to sell their products.At lost one voice live voice came and I explained the situation and asked him to block and deactivate my zim.But airtel man told me that he can not do any thing and asked me to approach any airtel gallary for that service.It at night 11 pm and airtelpeople know very well that I can not lodge any complient till next day 10 AM.and their counterpart theief will use the phone and they can earn revenue. Again on next day I went to a nearest airtel gallery and requested to deactivate the card and give a new card for Rs.150/-.They a gave new card but informed that their system was down for lost couple of days & they aer not sure when they act upon my complaint.On that day I saw many people with sa complient.These people earn crores in sale agains tstolen cards & Calls.