I had a similar experience with ebay, bought a shock, thought it did not look right, had my LBS have a look, they sent it to Mojo, they returned it saying the shock is unrideable, put a complaint in to Paypal, because I had someone look at it, I did not have a leg to stand on, so I sucked it up. Did not sell the shock on, because real biking folk don’t do things like that (and what is happening to you) to other biking folk. But they should be able to get away with this sort of thing. Sorry, not much help.