Amazon reimbursement

Hello. We have lost significant amount of units from two inbound shipments. I have opened the cases for reimbursement but i keep on getting automated replies that one of required details is missing in my proof of inventory doc. Whereas the doc contains complete details. For their convenience I even highlighted and added text labels yet they keep on denying the docs saying it’s one of the information they require for reimbursement. Is there any workaround or a senior I can get to handle this?