Revised return

I have submitted my original return for a.y. 2013-14 in july 2013 i.e. within the due date however due to some correction accounts i had to file revised return on or before March 2015 which could not be submitted due to some reasons. Now my question is that how can such return be filed as income tax site is not accepting the return?? if i m not able to file the return then how to proceed with accounts of further years?