Activision review: Call of Duty account

Last night at 10:10 PM, 6/5/2024, I attempted to login to Call of Duty: Modern Warfare 3 to play. I was given the error message "You have been temporarily banned from playing on the Call of Duty: Modern Warfare 3 servers." When I looked further into the ban on Activision's website, I saw that the status of my ban was actually "permanent" for Call of Duty Modern Warfare 3, Call of Duty: Warzone, and Call of Duty: Modern Warfare 2. I appealed the ban because I haven't done anything that would have gotten me temporarily or permanently banned. This morning at 4:44 AM, 6/6/2024, I received a response from Activision with the following response: "Your appeal has been reviewed and we've confirmed with our security team that your account has been permanently banned for using unauthorized software and manipulation of game data. As you were the account holder at the time of infraction, your ban will not be overturned." It appears to be a generic response with no further details into what manipulation or unauthorized software was used, or exactly when it was used on my account. If I knew that information it'd help to know when someone hacked my account or if an error occurred that accidentally banned me. I had played the game the day before with no issues and have never used a hack. I play this game for fun with my friends and have spent hundreds of hours leveling up and hundreds of dollars on game upgrades and skins. I've bought Modern Warfare 3 twice, once for my PS5 and another for my PC, because I upgraded my console and really enjoyed the product. This week I spent $20 on CoD coins to purchase the new Gundam operator. My account must've been hacked, or the permanent ban was an accident on Activision's end. I have never hacked, nor do I plan on hacking. I wouldn't have spent so much time and money in this game if I planned on hacking and risking getting banned. My Activision account is Gonyo#9480600. Thank you.