Airtel — Want to block particular Idea no who is sending me sms and calling me.

Hi friends, Iam karthick from Chennai, iam using the airtel connection for the past 5 years, the service of airtel is simply superb and awesome for the past 4 years, now a day’s iam getting unnecessary marketing sms via daily, which makes me really frustrated. iam nearly getting 10 to 20 sms per day, when I was trying to call that persons the calls seems to be not reachable, The numbers which Iam getting the sms are "[protected]", "[protected]". Please tell me if there is any way to solve this issue.