Looking for a Smarter Way to Secure an Instagram Username

I’m a filmmaker and visual storyteller running a small but active creative business in Canada. I’m not a large company, but I’ve been consistently using the same brand name across my official website, YouTube, Kick, Google Business Profile, Telegram, and other platforms for several years. I’m now looking for someone with real experience obtaining a specific Instagram username that matches this established identity. I have supporting business documents and clear proof of long-term use of the name across multiple platforms, I’ve already explored the standard Meta support and trademark-form routes, so I’m not looking for someone who will simply submit a basic form and wait several weeks or months. I’m looking for a practical strategy, alternative escalation path, or proven approach that can move the case forward as quickly as possible,

Please don’t apply if your plan is to spend days reviewing a few simple documents, submit a standard Meta form, and then wait indefinitely for a response. I’ve already explored that path and it doesn’t work for my situation. Also, please don’t suggest contacting the current username holder directly, as that option has already been tried and they are not cooperative. I’m specifically looking for a faster and more effective strategy.

1. Have you handled a similar Instagram username case before?
2. What approach would you use for this case?
3. How quickly could you realistically complete it?