Free Fire Max Account Hacked - Phone Number Changed

I play Free Fire Max on an Android device and my account has been hacked. The hacker changed the phone number linked to my account and I have not been able to secure it again. My in‑game UID is 10772409801. I noticed this problem about 10 months ago. I contacted Garena/Free Fire support about this issue and they told me to use my email ID, but my account is still not secured and the number linked to it has not been changed back to mine. I request that my Free Fire Max account be secured and that the phone number on the account be changed back to my own number so that I can use and protect my account safely again.