Airtel /life time prepaid connection
Activation of my connection

To whom it may concern

I have taken a life time prepaid card of Airtel (Rs.299) on 25/05 .I have used about Rs.2000 of talk value within four months. For last six monts or so it is in idle condition. Last week I have been to banglore and tried to use it. When I started my mobile it shows a response as "Sim card registration failed". My number is 9800778721. Please try to activate it immediately or convey me your response.