Steps
>> Dial *141*10# and get 10rs. credit
>> Now Activate 8rs. 3g pack by dialing
*121*11#
>> Now browse 15 to 20mb
>> finally open "facebook application"
>> After complete the 25mb (it notices you
are 100% consume internet Like this)
>> But continue the browsing the facebook
application Now you are consume balance
>> When you finish the balance, it's shown
0.00rs. balance
>>Now open "one.airtel.in" with default
settings Now you are unblocked....!