I used the coin mixer that is advertised here (the ads that appear below posts). I sent them my coins to mix and then they told me the coins I sent were not enough and that there is a certain minimum amount required to use their service. But they didn't say that anywhere BEFORE sending my coins. They happily accepted them AND THEN tell me about this requirement. So OK, give me back my coins then, but nope! They kept it!

This place being popular I just stupidly trusted them thinking since they are allowed to advertise here that they are somehow vetted by this site. But stupid me don't even know if this site itself is clean.

Are mixers %100 effective anyway??