First, extended warranties are highly profitable if done right. Way back in my college days, I worked for a certain nation-wide electronics retailer. The return/profit on our extended warranties was something like 60%-70%, and at the time, they were typically 10%-20% of the cost of the item. When they started moving them to be 30%-40% (or higher) of the cost of the item, they started being a much harder sale, and that return percentage went down. Typical case of greed in a corporation ruining a good thing.
I doubt that has changed much. If you are not making money off extended warranties, you are doing something wrong and/or have your prices too high.
To this specific case, that could be a legitimate reseller who made a mistake, or it could be a shady one ripping you off, or it could be a scammer. As others pointed out, many scams are very sophisticated these days, many looking better than the originals. You have to be extremely careful, just because it looks legit (or the same as legit) does not mean it actually is. Research has to be done to "vet" someone/something, as they used to say. I am an IT manager, trust me on this.
Lastly, as far as Mopar doing anything about it if it is a scam... my two cents is that no manufacturer will unless it becomes a huge epidemic. Scams have become so frequent and numerous, very few (if any) corporations will spend resources on fighting them. Helping prevent them, sure, or awareness of them, sure, but not going after existing ones. That is up to you, the attorney general of your state if it was a legitimate business (that did a shady thing), or law enforcement if it was a scam.