My Steam Account Was Hacked, and I Can’t Recover It

My Steam account has been hacked. The password and email associated with my account were changed, and now I’m not receiving verification codes on my phone, likely because the hacker also changed my phone number. I’ve contacted Steam Support multiple times, but I haven’t received any response. I have proof of ownership, including emails, account activity, and documentation of my purchases. This is extremely frustrating as I’m locked out of my account with no assistance. I need Steam Support to respond urgently, verify my ownership, and help me regain access to my account. Please prioritize this issue and assist with restoring my account.