Recently I have been randomly downvoted and I suspect it is the same user. The user doesn't stop at downvotes. He/She ensures that he/she upvotes the other answer where I have replied no matter how good my answer is. Fair enough, I don't loose my sleep over it but how do you deal with such users? So I thought of searching meta and I came across [THIS](https://meta.stackexchange.com/questions/141247/dealing-with-downvote-trolling) question where a mod did specify that 

> 
> If you suspect you've been downvoted by a particular user, flag the thing that makes you suspicious of that user (a comment they made to that effect for example).
> 
> 
> 

There was another thread which I am still searching but unable to find where a mod had said the same thing... "To Flag It"

On three occasions, I did that. On two occasions, It was marked as helpful but on the 3rd, I was confused with the Mod comments.

![enter image description here](https://i.stack.imgur.com/CqvOF.png)

**My Question**

Can any mod share some light on it? When can or can't a mod help with downvotes?

**I am not worried about reversals**. I want to **understand the process** and hence my question above. If you see [THIS](https://meta.stackexchange.com/questions/126829/what-is-serial-voting-and-how-does-it-affect-me) link, the last line says that 

> 
> If you find you are the victim of serial voting multiple times within a short time span, feel free to flag one of your posts for moderator attention and explain the situation so they can investigate further.
> 
> 
> 

If the mods seriously can't do anything about it then I will stop flagging. Let those users downvote/upvote and be happy for all that I care :)

I am **ready to accept** an answer by a mod which can be as simple as "**Sorry, We can't do anything**"