LTCG tds deduction refund claim issue

Hi all
I have sold of immovable property which is more than 50 lakhs and tds also deducted on sale value, but it was long term capital loss. So ITR 2 filing I was claimed TDS refund. The return is defective due to ITR schedule income is mismatched with 26AS and i was disagreed on my response, but refund not credited, intimation mentioned tax credit mismatches as per sec 37ba.
Pls guide on this how to get the refund.