You seem to misunderstand the job of the GMs. It is not their job to fix bugs for you, nor is it their job to report bugs to the QA team. They have an article telling you how to report bugs for WoW.
Players can report bugs via the in-game bug report tool or the Bug Report forums. Those go to the QA team who DOES handle bugs. What they don’t do is reply to you directly and fix your account directly. When a bug is fixed you will see the update in the Hotfix notes on General Discussion or Patch notes. That fix will apply to everyone, not just one account.
That is how it has always worked. You can learn more about what GMs are tasked to do, and what they are NOT tasked to do, here: