Shiksha.com — Spam calls and messages everyday

I am really facing problem due shiksha.com i registered my number only cuz it was not allowing me to operate it was just for servey. Stop irritating by calling me and stop circulating my mobile number to colleges, everyday i got calls from colleges. This is really frustrating. Every got spam calls and emails and there is no option in the app to stop getting calls. please stop disturbing in and please deactivate my account or profile from your website