General information about flagging can be found in the help accompanying this site: Privilege flag posts and What if I see someone doing something bad? and all links within, i.e. Meta Stack Exchange.
Now, that being out of the way, it seems you have no trouble flagging posts, but that you are dissatisfied with how your flags are being handled; or how one specific flag was handled. This is very unfortunate.
Most of the flags raised are handled by the community itself. Some need to be handled by moderators (i.e. custom flags), some might be expedited by them. All people involved in this are here on their own time, they are volunteering for this kind of work.
I am speaking for myself (although my fellow mods hopefully agree); I am treating every flag diligently. I will check whatever the flag says and either take action accordingly, or decline with the appropriate response. There is not the world of reasons available, so I'll use the closest one. Occasionally I'll decline with a custom message, that's usually not necessary though.
I've taken the time to review your flagging history and I've identified the post in question. I fully support the decision on that flag. I'm not going to disclose any further details though. If you need to discuss this topic further, please comment on this post and I'll open a chat that allows us to talk privately.
In general I am quite liberal at handling flags. I will usually mark them helpful even when there is little a moderator can do to mitigate the issue.
Many issues on this site are better addressed through a constructive comment rather than a flag for the attention of moderators. If you disagree with an edit - like I said previously - you can @-notify the editor via the comments section. If an edit isn't deliberately introducing errors, defacing the post or is otherwise destructive, a flag is probably not the wisest choice. The reason for this is that moderators rule on the technical issues of the Code of Conduct. So if it isn't a violation of that, we'll decline. If there is the possibility of a technical issue it is better to post on meta; we cannot escalate flags, but we can escalate meta posts.
Please accept that if moderators cannot understand the flag raised, or cannot see the issue you raised, the flag needs to be declined.
I truly hope you'll have a better experience on this site in the future.
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