Guys, TL;DR
Just used a selective reading approach to find out about Changelly's selective scamming approach

5 cents from my own exp: been using Changelly for a while, no serious issues with them. It's really hard to say whether they are scamming selectively or not, but their service is quite popular and I've never seen anything like this before.
Anyway, it does not sound reasonable for me to claim publicly that these guys running Changelly are all crooks & thieves.
As one guy just mentioned above, you can ask your law student, it's not the way to investigate and/or resolve an issue. Generally, making an outrageous scam incident public makes great results, but it shouldn't boil down to yelling "scammers" out loud about all of their subsidiaries (the latter is quite obvious to me).