Airtel — deduction of 10rs from my prepaid mobile connection

sir, i am airtel mobile prepaid customer.my mobile number is [protected], i regularly receive message from 64611010, from airtel that "thanks for using dada sub10 service on airtel wap, you have been charged rs10".then 10 rupees is deducted from my balance, daily.it started more than 10 days before.i am very much worried.i unknowingly went to dada.net, later dont know, how i became a subscriber.i am not using any services of the kind.they are simply deducting my money.i had contacted airtel customer care to deactivate my dada sub10 subscription, but no response from their side.sir, please help me to deactivate my dada sub10 subscription.i dont want to loose my money for such services.i have now no other option than to stop recharging my number.sir help me.please arrange to unsubscribe my dada sub10 service from today itself.i solely depend on your help.thank you

Sir, i am airtel mobile prepaid customer.my mobile number is [protected], i regularly receive message from 64611010, from airtel that "thanks for using dada sub10 service on airtel wap, you have been charged rs10".then 10 rupees is deducted from my balance, daily.it started more than 10 days before.I didn't kow who subscribed this service to my number. I want to disconnect this service from my mobile.
Thanks.