Fake Offer of 3G data plan

Location/place: Pune

Name of company/service: Tata Docomo

I got message having offer to make recharge of 250 which will give me full talktime and 3G Data.I made recharge of the said amount, recharge was successfully made, got full talktime. But when i tried to access internet i was denied to even establish connection for internet. I continously followed up customer care executive but i wasnt provided appropriate assistance, my cell number was blocked by them. Now i am unble to access 3G internet. Even i tried to see my data balance by running USSD code(*111*1#), it simply shows you dont have data balance. Please assist.