Not receiving the income tax refund

I AM AN ASSTT. TEACHER IN SHETH H. M. SARVAJANIK HIGH SCHOOL, SOJA (TA. KALOL). MY PAN NO IS AGLPT1329E. I HAD ALREADY  PAID THE INCOME TAX OF THE FINANCIAL YEAR 2012-13 ON 10th JULY 2013. I AM ABLE TO GET THE REFUND OF Rs. 4000 THAT TIME. BUT TILL NOW, I HAVEN'T RECEIVED THE SAME REFUND. MY SALARY BANK ACCOUNT NUMBER OF AXIS BANK IS 448010100040460. PLEASE CHECK THE STATUS AND HELP/GUIDE ME FOR GETTING THE REFUND.

THANKS

SINCERELY YOUR'S 

C. M. THAKOR

+919998620711

SHETH H. M. SARVAJANIK HIGH SCHOOL

AT : SOJA

TA. KALOL

DIST. GANDHINAGAR

GUJARAT STATE

PIN : 382735