Unwanted services activate by the company and deducting the money without informing the user.
Services like joke and alarm alert activate on my mobile :9717357919 without my permission and deduct the money from my balance.
The Airtel now start cheating with their client.When you call and ask them to revert back the money they will transfer in your balance.I faced this problem many thrice.If it will happen again I have only one choice to discontinue the Airtel mobile number.