Hello

Abdul its not only you getting sms from different universities , every student gets this message after completion of their 12 exams as their number and information  gets stored on different platforms(Scholarship portal, Public forums or social media, coaching institutions) and many universities uses this information , so that their admissions increases and hence they either mail the person or call them directly and advertise their college, institutions and universities . So if you find it irritating then you can simply reply STOP or unsubscribe , or you can directly block them .