Thanks for the suggestion but I think that all that FPA can do is label them as a SCAM. However, if they don't exist anymore there isn't much point.At least you showed that you tried to contact them.
Keep fighting for a chargeback. If you want to bring more attention to the situation, you can file a Traders Court case.
but can't email them when they don't have an email anymoreAs long as you attempt to email them, that qualifies.