What you do in the first three days largely decides what you can recover. Document everything before you unpack further, note damage on the delivery paperwork, and keep the original boxes.
Don’t sign a clean delivery receipt
Once you sign that everything arrived in good condition, you make your claim much harder. Note every damaged or missing item before the crew leaves.
Photograph everything
Wide shots and close-ups of the damage, serial numbers, and the packing materials. Time-stamped photos are powerful evidence.