Facebook Old Account Missing and New Account Created Without My Request

I have a problem with my Facebook account. My old account, which is linked to the phone number 8570085***, is no longer visible and instead a new account has been created without my request about one hour ago. I do not want this new account and I want it to be deleted completely. I only want to use my old account. I kindly request that the newly created Facebook account be closed and that only my old account remains active.