[Resolved]  BSNL GSM Mobile — Unsubscription of caller tune and activation of DND

I own a mobile connection No.[protected] in my name. Inadvertently some caller tune has been activated in my cell phone which I do not want and wish to get it discontinued. All my complaints through your call center have gone to deaf ears and nothing has been done so far. I have sent message "UNSUBSCRIBE" to 56799 at least four times and every time I got assurance that the caller tune will be removed within 48 Hrs. Nothing has happened even after 48 days! Similarly I am receiving uncalled for , silly and idiotic messages on my above number, umpteen times I complained to your Call Center , again to no avail I also sent messages "START DND" n number of times on 1909 , with standard reply" data could not be retrieved". I doubt whether you are really public sector telecommunication giants or it is just a myth.
I reserve my right to proceed against you in case my grievances are not redressed within next two days at your sole risk and responsibility.