One of my client is registered under GST from Nov 2017 but his turnover is less than Rs.20 lacs. He is engaged in providing Rent a Cab services.As he is registered under GST, return filing is mandatory. But due to some financial issues he was not able to file the return & pay taxes on time & now huge amount of late fees is coming per month i.e. 10000/- per month. Is there any way out how this late fees can be reduced or waived off?