Invoice value mismatch - Customs - Exim - SEZ

We had received 4 consignments and routed the same through SEZ. On receipt of the goods we were given the BOE for home consumption (SEZ to DTA Unit) in 2021-2022, we had made the payments to the seller as per the invoice. But the BOE and the entries made by SEZ to the customs seems to be with very high values to a tune of 7% to 41% than the invoice value. Now we are unable to close the BOE as the bank states full invoice amount not paid. Trying to reach the SEZ unit but finding it difficult. Kindly guide what can be done to resolve the issue. Contact admin@med-works.in