Recover Hacked Roblox Account -- 2

My Roblox account was taken over more than a month ago and every attempt I have made with the official support path has stalled. I opened a ticket, verified everything they asked, yet the agent eventually said my ownership “could not be verified” and closed the chat... (Budget: $10 - $30 USD, Jobs: Account Management, Computer Security, Customer Support, Internet Security, PHP, Roblox, Technical Support, Web Security)