Free Fire ID Hacked And Phone Number Changed: Unable To Access Account

My FF ID (519432253) got hacked, and they changed my phone number and password, so I couldn't get in. I've had this account for ages and have invested a ton of time and cash into it. It’s super frustrating to lose access when I haven’t done anything to deserve it. Please help me get my ID back and secure my account to prevent this from happening again.