Airtel
Getting Charged with Message from AD-54321

I have been getting SMS Messages with the ID: AD-54321 and am getting charged Rs.10/Rs.15 for each message. Message has the text "Thanks for downloading so n so from Airtel. You have been charged Rs.15. Join GamesClub at http://gclub.in

I have already raised so many complaints in the customer care to stop the service. Also checked on 121 START and STOP service for active services subscribed to. No solutions is found inspite of speaking to the Supervisor/Care Center several no. of times.