Nokia Lumia 720 — offer not given

hi sir,
i bought a Nokia lumia 720 mobile from mobile store in district centre , janakpuri, delhi.

they promised me as per scheme on the box of nokie lumia 720. i will get 2gb of 3g data each month for next 2months. but its been three days now. i haven't received any such data.
i have tried calling idea customer service, complaint number, mobile store people and nokia people.
but no one is ready to help me.

my idea number is [protected]
my alternate number is [protected]
please take strict action against idea, nokia and mobile store.
also help me in getting ma offer 2gb 3g data plan.