CELLONE (BSNL)
Deactivation of caller tune not working

I have tried to deactivate my caller tune for more than 20 times by sending sms to 56700. The reply I get is that the code is invalid. My balance is getting reduced unnecessarily. PLEASE HELP.

:(

Company: CELLONE (BSNL)
Country: India
State: Maharashtra
City: Pune

  <     >