Intimation for difference in interest u/s 234c

I'm a CA, and use Winman software to file my client's returns. The clients for whom Interest u/s 234C has received intimation for variances in 234c interest calculation.

I tried calling the CPC helpline number asking for the department's calculation of the 234C, and surprisingly nobody has the basis for such calculations and relying completely on CPC's automatic calculations.

I went to the Assessing Officer's office personally to discuss this issue. And they too, do not have any calculation as the same was done automatically by CPC.

I reached out to Winman software too, and they also do not have any basis for department's calculation.

For a few clients, we filed the returns through income tax notified utilities. and in these cases too, the clients are receiving intimation for differences.

Is there any way to receive the basis/ calculation for 234C interest made by the department, without applying for an appeal?