No doubt, things happen. My buddy received a very expensive Pillium amp from Greece, and, 2 big capacitors were bent and loose. These are big Coke Can size capacitors.
Pillium, without hesitation, had him return the amp and they did the repair. No questions asked. The cost to ship a 100+ pound item back and forth, twice, cost some serious money.
The buyer is not responsible for any of these costs. Buyer paid for working item and that's what they should get. Although the seller is not at "fault" they are the ones who must address the issues with the shipper.
In this case, Pillium did the right thing.
IMHO the OP was cheated, mistreated, used and abused, dazed and confused by seller of the B&W speakers.