Why does Yahoo Answers also delete good questions and answers?

I reported spammers and spam bots that are advertising something, and i look again the next day and they are still there. That is easy as hell to tell if its violating community guidelines, and in fact they are, so how hard is it to even delete it. Instead they deleted my question which they said i was insulting other participants... Of course not, one person out of 18 couldn't take the question seriously and told me to get a life, which i responded that since he or she is the one that is responding, should probably get a life. So my question is why does Yahoo Answers do a really bad job at deleting content that they should, and have a lot of mistakes deleting content that they shouldn't?