Regarding custom return of details of goods imported

This query is : Resolved

CA ANKIT KANSAL (Querist)
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06 August 2015 We are importing goods at concessional rate of duty and we are filling custom return of goods imported at concessional rate of duty with superintendent of Custom & Central Excise in Range timely. But as per rule 7(c) we have to file this return with AC or DC of Custom & Central Excise in Division.
Now Division is demanding penalty for this procedure lapse assuming that we are not filling return. Is there any liability for penalty? If yes, then Can we save it? If yes, then how we can save penalty.