Tata Docomo — Not providing benefits as promised in the advertisement

Address:

Bangalore, Karnataka

I got a message by LM-PHOTON on 7th feb 2013 saying 1GB dat free on RC350 for your Photon number [protected] (total 2.5GB Data) offer valid till 14th Feb 2013 Free data credited within 72hrs. I did the recharge on 8th feb and waited for 3 days, my data was not credited. I contacted customer support through chat, he said that offer vaild only if you have done previous recharges for Rs 350 or of validity 30days or more. My previous recharge was for 21 days validity.
But my question is how will i come to know that the offer is valid only if ou have done previous recharges for 30 days validity or more, as message does not provide any information regarding this. The information was too misleading and people are getting fooled by such offer which do not give you promised offer.
In the evening i again called up[protected], there they informed no such offer exists. And usually messages will be either sent by TATA or DOCOMO, not by PHOTON. I was shocked, because i used to get lot of messages by LM PHOTON till i did my recharge on 8th feb.
I have attached a screen shot of the message.
I want my extra 1GB data, its not my responsibility to check for conditions which were not displayed in message. TATA DOCOMO PLEASE STOP THIS ACT.