Unable to Access My PUBG Mobile Account - Possible Hacking Issue

On the night of 13.07.2024, I logged into my PUBG Mobile account, which is linked to Game Center, Facebook, email, and phone number. However, the next day, I found that different SV1 accounts were newly created and linked to each of my connection addresses. When I try to log in with my email, it goes to an SV1 account. The same happens with Game Center and Facebook, each linking to a different SV1 account. How can Game Center and phone number removal be so easy? Just recently, on 09.07.2024, I purchased UC, and I have the receipts. I can't recover my account, and no request can be sent. I am not receiving any code on my phone number, which has likely been changed. How is this change happening instantly? Can you please help me?