I received these instructions
The best way to stop this is by reporting this to TRAI and NSE.
NSE
https://www.nseindia.com/int_invest/dynacontent/any_portal.htm
TRAI
DND registration (now NCPR) helps you to stop receiving unsolicited/ unwanted commercial and promotional calls and messages on your phone. Even if you registered for DND, sometimes you will receive commercial / unwanted calls and messages on your phone. If so, you can register a complaint with your mobile operator.
Important note before compliant
You have to register a compliant from the mobile or land-line number; you received unwanted / unsolicited calls or message.
Within three days of receipt of the unwanted / unsolicited commercial or promotional calls or messages, you should give a compliant.
Registration of DND complaint by SMS to 1909
To register a complaint for receiving an unwanted / unsolicited communication, send SMS to 1909 in the below format:-
COMP TEL NO XXXXXXXXXX, dd/mm/yy, Time hh:mm
XXXXXXXXXX should be replaced by the telephone number or message header of the unsolicited call or message you received on your phone. You will be receiving an SMS confirming your complaint registration with unique compliant number and within 7 days of the complaint, you will be informed of the action taken on your complaint.
Check the below two examples:-
Example 1): You have received an SMS from DM-IAMU on 30th Sep’11 at 2pm. Then your complaint SMS will be “COMP TEL NO DM-IAMU, 30/09/11, Time 14:00” and send it to 1909.
Example 2): You have received an SMS / call from 9123456789 on 1st Oct’11 at 11.35am. Then your complaint SMS will be “COMP TEL NO 9123456789, 01/10/11, Time 11:35” and send it to 1909.
Registration of DND complaint through voice call to 1909
Dial 1909 from your mobile and choose to speak with customer care executive to register a complaint for receiving unwanted /unsolicited commercial SMS or call on your phone, even you registered for DND (now NCPR).
Provide the below details of the unsolicited call or message to customer care executive:-
Company / Brand / Telemarketer details
Telephone number or the SMS header of the call / message you received
The date and time of the call
And, description of the call or the message
Then the customer care executive will register a complaint and provide a unique compliant number, keep the number for future reference. Within 7 days of the compliant, you will be informed about the action taken.
NSE has launched a new number to report SMS tips. Report via SMS on 91-8291833676.