Demand for interest and penalty

Respected members

I have filed my gst 1 for june 2021 with taxable and tax value but by mistake gst 3 was filed bill

Although tax was paid on time and later on we got notice for tax demand and penalty for difference amount then we filed drc 3 as we have the sufficient cash ledger balance we already paid 

But now officer has issued demand notice for interest and penalty as drc 3 was filed after 40 days of notice issued

Is there any way we can waive or remove this interest amount pls advice to reduce this demand  amount 

Thanks for your advices