Consumer Redressal

I used 1 Air tel postpaid connection From March 2014. my billing cycle is 20th - 19th. In the month of May i received bill from 20th Apr- 19th May, in this bill my bill amount was 17978 Rs. in this bill i activated 2 GPRS plans details are given bellow: 1. 99 Rs - 2GB data - 20th Apr 2014 to 4th May 2014 2. 175 Rs - 2GB data - 6th May 2014 to 19th May 2014 On 4th of may i called on 198 and spoke with the customer care executive that till today (4th May) i have used almost 2 Gb data and now i want to activate another GPRS plan, so can i activate another gprs plan, he told me u can activate another plan then i asked what will be the charges? because i have already used 2 GB data within 15 days. so he told me don\'t worry you will be only charged for 99rs for that plan if u exceed more than 2GB then u will be charge as 10kb/15ps. hen i activated 175 rs gprs plan which gives me 2gb data. But now my relatives are receiving threat calls from airtel