He might not be scammed. Just because it is a Trucking Company does not mean its a scam. I own an electrical supply company and sell other things as well. The owner may be into bitcoin and bought miners to resell to make some more money. I would contact them. Anyway you have like 30 or maybe even up to 90 days to dispute the charges. Dont just do a dispute, try to contact them and find out first. I had a guy buy from my one site once and because his order did not get to him in 3 days he disputed the charge. I sent the item and he got it on day 5. So I got screwed. He got my stuff and my money.
Dont just assume its a scam. You could be just causing problems for an honest seller. I am not saying that he is honest for sure but make sure you look into it first.