Wrong Deduction of TDS

Person is employed by Govt. Dept. receives salary.

I have checked the tax credit Form 26AS which shows TDS deducted  under Section 194C,

and Paid Amount charged more than salary amount.

I have checked Form 16, issued by the dept., There is mismatch between both of them and TDS deducted under wrong section. and Refund can be claimed u/s 89 relief

there is difference in amount paid and wrong section applied for TDS deduction

So, What can I do in this situation???