Nokia 1200
How can i prevent to take Rs.1 per day in my mobile?

I bought a new cell phone on 1.7.08. i put airtel lifetime card for one year. they take Rs.1 per day. i call the customer care gfor this complaint. thay told to me that sent an sms of STUD 365 to 404 and also thewy told that the plan will change in 48 hours. i do it. but not yet there is no response from them. so i request you please make plan change.

By,

s.dinesh