Dear aspirant hope you are doing well..

To stop unwanted message and call , you can activate DO NOT DISTURBE mode on your phone.

Process to activate DND on your mobile phone...

If you choose not to receive any commercial messages or calls i.e for fully blocked registration:

1. You can call 1909 (toll free) from your landline or mobile and select your preferences.
2. You can also register by SMS by sending START DND or START 0 to 1909.

Hope it's helpful thank you..