1) First Dial *141*10# And Get 50mb 2g Data Loan (validity-2days)
2) Use Some Data And Remove your sim from mobile Next Day.
3) Wait 24hr And Insert your sim on mobile.
4) Now type "MO" (without quotes) and send it to 54321
5) Now open one.airtel.in and check Hurrey Now you are unblocked, and other homepages also unblocked and use free Internet again...!!