After 6 years of selling on AMZ , i am almost give UP! FBA have lost 5 of my shipments , thousands of items that cost me 5k$ to produce. I dont know how to send any inventory to FBA if thel steal everything!!!

when i start reimbursment request they accepted only 2 shipments lost from 5

As i proof i have provided:

1 original factory invoice with blue stamp

2 fedex delivery proof with amz employe signature (no weight discrepancy)

3 pictures of box with items inside and shipping label attached

4 screen from celler central shoving that my shipments are at DELIVERED status

WHAT should i do next? there is no faith in justice any more

Nearly every time when I ship to DE FBA storage (HAJ1) some items (last time as many as 5, what i big value for me - over 100 Euro) are stolen. I suggest there is not enough security and someone who unpack it just takes it. I am so angry. I paid all these items, I packed it, labelled it, paid for transport. And now - somebody has stolen it. NEARLY EVERY DE SHIPMENT. It does not happen in another country. I ship to Canada, US, UK.. and nothing was stolen there. But 80 % of shipments to DE means for me - lost money and being hopeless.

What can I do if I shipped out a case of products to FBA and a part of the shipment gets lost. Amazon claims that only 33/52 was received. I am the one who put the shipment together and know they were all in the box. Also there is proof on UPS tracking, that Amazon has provided as their partner delivery, that the items were delivered and received, they were also weighed in to match the weight of the products shipped. I opened multiple cases provided the proof of purchase they need but they close my case saying they don't find the items. This is thousands of dollars of loss for me and Amazon won't take any responsibility. What's the best thing to do to get reimbursed for all the products they lost?