Tax credit mismatch

sai ram (article trainee) (53 Points)

13 June 2014  

I got an intimation u/s 143 stating the Tax Credit Mismatch because of wrong TAN number keyed in while filing return of income.

 

Now what i should do in response to intimation

Whether I should file revised return or i should send a letter to ITO

they gave note that it must be answered with in 30 days but by today that 30 days time is expired, time lapsed because i made delay 

 

Now what will be the consequence and what is the remedy ?