Recover My eFootball Account and Reset My Konami ID Email

I am writing because my Konami ID and eFootball account appear to have been hacked and I have completely lost access. Yesterday I was actively playing a match when I was suddenly kicked out of the game. When I tried to log back in, I discovered that the email address linked to my Konami ID had been changed without my consent. My Gmail account, which was originally linked to my Konami ID, was compromised and someone seems to have used it to access my Konami account, change the registered email and log me out. When I now try to log in or recover the account, the system tells me that my Gmail is not registered with any Konami account anymore. As a result, I can no longer access my eFootball account or any of its data. I have invested a lot of time and money into this account, including in‑game purchases as shown by the attached receipts, and I can provide any additional information needed to prove that I am the legitimate owner of the account. I have already contacted Konami Customer Support and received the inquiry number 7736723, but I have only been informed that it may take one or two weeks for a reply. I am extremely frustrated and upset by this situation and kindly request that my eFootball account and Konami ID be restored to me, with the email address reset back to my own and my access fully recovered. I am ready to provide any further verification or documentation required so that you can secure the account and return it to its rightful owner as soon as possible.