I don't think it makes sense for a casino as well-known as Stake to cheat its user for $22. They have a good reputation and there must be some kind of mistake. The player could have accidentally pressed the wrong button without even noticing it. If it was a bug on the gambling site, we would have heard about such situations more than once. But if the player is 100% sure of his right then he definitely need to seek justice.
^ Definitely right and you have a good point there, I think they will not scam that very tiny amount for them, $22 is almost nothing for them and I think they will not scam that small amount. There could be many factors that happen and I think calling them a thief is not necessary because you are not proven yet. So for now, the best thing that you can do OP is approached them nicely reading your issues, I don't think they will not listen to you in that way but there's nothing wrong if you will try them.
As the title already indicated, The OP is blaming Stake for not doing anything to help him about his case about evolution gaming bug on his bet. He is not accusing Stake for scamming him but for not taking responsibility for the problem on one of there live games provider. This is surely small amount but Stake should atleast help him to recover or get some good clarification from evolution gaming.