(?!) itrv received but returns not processed

Was constantly sent demand notices for a sum (FY09-10) that had been paid and correctly showed in 26AS. Filed several letters with the CPC and also, filed a rectification request before the stipulated 3 years were over.

The demand notices stopped.

A strange thing has happened.

Neither the rectification request nor the returns for the last 2 years have been processed. No communication whatsoever has been received at the email ID.

I wonder why ..... 

Can a practicing CA shed some light on it?