I guess we are all having to deal with messages being sent asking to invest in a particular stock or guaranteeing returns. SEBI has taken action against one of them by penalizing Rs 10lks. More here on Business line.
If you receive any such message, everyone should complain to TRAI and SEBI.
Link to register SEBI complaint: https://scores.gov.in/scores/complaintRegister.html
To register complaint with TRAI: http://www.trai.gov.in/faqcategory/complaint, you have to call the toll free number of your mobile phone service provider and register this