That does suck, but could you send me detail pictures and measurements so I can understand this situation a little better.
Seriously, sorry to hear that. I don't like when you help someone and then they end up screwing you in the end. That's not cool.
I agree that general chit chat is just that. Chat away.
I also agree in exposing anyone who wronged anyone on this site. If I ever do anything intentionally or unintentionally to anyone on this site that is wrong one way or another, feel free to let everyone know.
Did you write these people and verify that they were the ones that were selling your designs?