How to deactivate/stop bsnl hello tunes,caller tunes,dialer tunes

Via SMS : Deactivation – sms “ BT DACT” send to 56700


Via DIAL : Dial 56702 [Toll Free]


NOTE : 



  Calls to 56700 - Rs 2/Min
  SMS to 56700 - Rs 2/SMS
  Calls to 56799 – Rs.1/min
  SMS to 56799 – Toll Free Song
  Download - Rs12 per tone/per month
  Monthly Subscription Charges – Rs 30/month