Can you please write in more detail in the correct format? It's hard to understand what does happened there. If I am not wrong Etherflyer is a decentralized cryptocurrency exchange. They don't hold any assets themselves. So how they are not giving your withdrawal? I am not using any DEX, it would be a stupid question. But let's see the Definition,
Decentralized exchanges (DEX) are a type of cryptocurrency exchange that allows for direct peer-to-peer cryptocurrency transactions to take place online securely and without the need for an intermediary.
Source:
https://en.m.wikipedia.org/wiki/Decentralized_exchange There is no legal organization you can make a complaint except the police. It would be easier to answer you if share more info with the domain name. Who knows if you are using the correct website or phishing site.