Consumer Redressal

I recharged up my mobile (no.9015306794) using erechrge. Site url is :myservices.relianceada.com. i got a message taht my phone is recharged up with a one month promotional balance of 101 Rs. and 1 gb free dtaa usage fr one month.... But I dint got the balance nor the internet usage.WhenI called custmercare of reliance they said that no. talktime and free data wd be given to you because the reachrge is only fr the new reliance users... I even aserted that there\'s no such information or condition is given on such recharge on the site mentioned above.they responded like dumb and said they cant help me refund out my money...... so wt should i do now??? should i file a case against treliance communications or should file RTI...or if any other thing can work then do let me know....