Currently if a Wikimedia wiki has an issue, the venues for users to report the issue are limited and esoteric. These mostly include IRC and/or Bugzilla.
Only [[https://meta.wikimedia.org/wiki/OTRS|OTRS]] had a clear traking of open/closed issues and waiting times, allowing a sort of [[https://en.wikipedia.org/wiki/Service-level_agreement|SLA]]. Time doesn't exist in the article talk pages (ns1), which live in the [[http://meatballwiki.org/wiki/WikiNow|WikiNow]].
There should be a proper user interface for reporting problems with the site that's available from the sidebar of any Wikimedia wiki. There are some notes about this here: