I logged into this site once, and subscribed to its daily mobile subscription. After some 10 days or so, I wanted to unsubscribe myself form these SMSs. So i logged into the site and searched for the option. When i found it and entered my phone number to unsubscribe, the site said, no such number is associated with the site. So, I thought okay, I might have got lucky and somehow i got unsubscribed.
But the SMS continued.
Even after having registered for national DND, I continue to get their messages.