Refund claim pending for 3b mistake

This query is : Resolved

sarathy (Querist)
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07 February 2018 Sir,
I have filed GSTR 3B for july-17. But Input Tax Credit (ITC) is wrongly entered IGST Column instead of CGST. The screen shot attached for your reference.

Now my query is I have applied ITC refund for july-17. And supporting documents (include 3B) submit to central excise office. My purchase bills are (CGST +SGST) , and my 3B Statement is (IGST + SGST) (Wrongly entry mistake)the officer ask where is IGST Purchase bills?. I explain the wrong entry mistake. But he is not accepting. How to rectify the error? And claim refund. Please guide me.