Some of my answers were downvoted unnecessarily and even the moderators decline to look into this saying that: "flags should only be used to make moderators aware of content that requires their intervention" I know that this is not their job to look into. Some examples are: this, this this .
I know that someone may be serial downvoting, but he has not done many downvotes, so it may not be the case. Also I must say that my these answers are not "not useful".
There is something useful in my answers. They are downvoted which means they are not useful. But why would someone do that. Maybe he's jealous or dislikes me? CAn something be done? WHy can't I know who downvoted my answer. Why don't they give reason for downvoting my answer?
EDIT: There is some evidence to serial downvoting because my most upvoted answer, which surely wouldn't need a downvote this was downvoted.