Airtel — cheating with fake offer promotion

Address:

Palakkad, Kerala

I purchased a moto g2 phone and the airtel promised me the following offer. ""1 GB 3G/2G data per month for 2 months in 3G/2G circles for Airtel prepaid and Bill discounts of INR 250 and INR 155 per month for 2 months on subscription of 3G and 2G data boosters of 1 GB and above in 3G and 2G circles respectively Airtel postpaid."" but it is not been activated and also the customer care people are saying that they cant provide the offer they promised.