kicked randomly

Recently I have restarted to play on CubeCraft:cube:, and I have been accused of Hacking "Anti-Knockback Detected":( I am sorry, but I shouldn't be playing on a server that's is gonna kick me two times, for no reason, I do not hack, and I would never hack, because it's wrong, and unfaithful, for...

So in Eggwars, when you break a block then instantly break the egg, you get kicked for "Breaking Blocks to Fast". I always get kicked for this and it is kind of getting annoying now. I can't really prevent it as when I'm breaking it, I don't really think of it. I know this is to prevent hacking...