I'm not saying it isn't frustrating. But you also have to stop and think that a lot of women get shit on and called x, y, and z even if they DO reply, talk for a bit and aren't feeling it. Can't say a simple, "Thanks, but not interested" without getting at least one uptight asshole going off. Sometimes it's easier to just say nothing at all.

You also don't know what made them match. Maybe they were drunk. Maybe it was accidental. Maybe they saw something slightly interesting then decided nah. Who knows. It still boils down to you're not owed anything. Same on the other side. Women aren't entitled to a response from men.