Wrongly availed ITC and reversed in GSTR 3b, but reversed in a wrong head

One assessee had wrongly availed some amount in Apr2018 due to error, in the very next month I. e. in May2018 he reversed the same and reported in Gstr3B ... 4(B)1...Under rule 42 and 43... but it should be reversed in 4(B) 2...i.e. it should reported in Others culumn

now dept not considering this reversal, hence dept says the itc claimed in Gstr3b is more than Gstr2a, why because the reversal part is not conisered by dept

they are asking payment to that extent