Dear Anil Kumar,
Don't Worry, if your original return was filed within due date i.e, 31st july 2011 ( for a.y 2011-2012 ), then IMMEDIATEEEEEEEE file a new revised return for that particular assessee , & then sign on ITR - V ( BLUE BALL DOT PEN ONLY ) & THEN immediate sent to CPC BANGALORE ADDRESS THROUGH SPEED POST & DON'T FORGET IN CASE OF SPEED POST , PLEASEEEEEEEEE DON'T MENTION ---> " POST BAG NO. 1 " . &
If your original return filed after due date also , then also you file a revised reurn & SENT itr-v to cpc bangalore ( as per IT ACT , YOU CAN'T FILE BUT CURRENTLLY CPC BANGALORE INFORMED ME , THAT U CAN FILE A REVISE RETURN , EVEN ORIGINAL RETURN FILE AFTER DUE DATE.)
TOLL FREE NO ( CPC BANGALORE ) : 1800 425 2229 & CPC (E-FILFING CENTRE): 180042500025.
Don't Worry & GOOOOOOOOOO AHEAD,
Thanking You,
PALASH RAKSHIT.