Hacked FF ID Recovery Problem

I have been using my Free Fire account with the FF ID 1970000180 for a long time on my Oppo A17 device in India, and I have spent a lot of time and money on this account. On 7 December, my account was hacked, and the hacker changed the phone number and password linked to the account. Since then, I have not been able to log in or access my account at all. I did not give anyone permission to change my details, and my old phone number, which was registered to this account, was removed and replaced by the hacker. I have not shared my account willingly or done anything wrong, so it is very upsetting and frustrating to suddenly lose access in this way. I have not yet received any help because I have not been able to resolve this problem through other channels. I request that my Free Fire account with be recovered and access restored to me as the rightful owner. I also want my account to be secured so that this kind of hacking and change of number and password does not happen again in the future.