REFUND UNDER E RETURN FROM CPC

I have submitted my return for the AY 11-12 through e return to CPC with a refund of Rs 1010/= On checking it has found that department has adjusted the refund in AY 8-9 and there a remark NIL DEMAND status Colum. Here I would like to clear that I have only submitted two years return ( 10-11 and 11-12) to CPC and before it I have submitted to Local I.Tax Office manually. There is no demand against 8-9 I have already writted to CPC banglore but all in vain. Pleas advise me what action is to be taken at my end to get my refund.