Why do you keep saying they only distributed 1BCH? Did they ever say how many they'd be distributing. I hold wavesand think it's a good coin but I don't really follow the air drops.
So I'm sorry you lost money and didn't receive as much bch as you were expecting but I don't see anything that shows you were scammed in anyway so you're spreading misinformation about a good project.
The only solution for OP never to try to keep all of his amounts in the waves platform to receive any airdrop, but as you can see the only thing that you can do just like to get the more explanation regarding what already happened with it.
But this will help you a lot for that
https://support.wavesplatform.com/en/knowledge-bases/2/articles/9821-bch-airdrop-faq-9-nov-2017There was only 100 BCH to be airdropped for all of WCT holders. That's why you are only getting a small amount of BCH.