GSTR 9 Annual Return

if you have shown your liability to pay tax in your Annual return and paid tax through DRC -03 under voluntary instead of Annual return tab, only remedy is to write a letter to you jurisdictional assessing officers (Assistant Commissioner/DC) mentioning the fact

I am facing a problem while filing Gstr 9 for 2017-18. We had wrongly taken excess input in Aug 2017 and reported that to GST helpdesk in Oct 2017. We kept the ITC due in credit ledger always. But now while filing GStR 9 we are told that we need to pay with interest of 24% per annum. Well another help in table 6 we filled the sleeve. no. B with actual input applicable and sl. no. M with wrong tax . Further in Table 7 we reversed H1 column with the excess ITC we wrongly credited. please guide and advise are we correct. Thanks in advance.