TDS deducted on Excess salary paid

Hi

HRA for period  jully 07 to june 08 was given to me by my accounts section wrongly.

out of this jully 07 to march 08 was in last financial year and for period jully07-march 08 i have alraidy paid income tax for last financial year and also submitted return.

april 08 to june 08 is in current financial year

this excess HRA for  period  jully 07 to june 08  is recoverd from my salary of  jully 08 to novmber 08.

Now i am asking to my accounts department  to reduce this recovered amount of last financial year from my current year income since i have already paid income tax on this amount. But he is asking me the tax rule

please suggest me possible solution.