Mismatch in Tax Calculation in ITR and Intimation u/s 143(1)

Hello Everyone,

My Query is-

We file an ITR for AY 2021-22, showing TDS deducted u/s 194C of Rs. 16000. This TDS is also reflected in our 26AS and claim as refund in ITR. ITR is successfully E-verified in time and intimation u/s 143 1 is also received.

but in such intimation no TDS showed as per Department calculation. We further raise a rectification request for mismatch in Tax calculation and rectified intimation u/s 154 received with same calculation.

My question is what we should do next to get the refund. as 26as is still showing TDS.

Please guide.