The seller promised to put protective film on each part but didn't do it. Also, they dumped all the parts in a box without any protection. As a result, the parts arrived damaged.
I contacted the seller and provided images and videos of the damages, a copy of the list of requirements they agreed to, and asked for a refund. However, the seller refused to cooperate. They blamed the damages on the shipper refusing to admit that there would not be any damages if they put protective film on each part or packed them properly.
Now, I am stuck with a bunch of damaged parts that I won't be able to resell because of the seller's negligence.