Activision review: Wrongfully banned

Hello

Back on May 5th Activision decided to ban my 4+ years old Activision account from playing CoD Warzone, Modern Warfare 2 and Modern Warfare 3. Not only that the account has 600+USD spent in cosmetics and titles from Call of Duty it was never ever restricted, temporary banned or suspended yet they have made the decision to ban someone who has done nothing wrong. I asked them to provide what file or app created this permanent ban and they keep dodging my question no matter how hard I try even for account recovery request as I saw a login from Cluj Napoca and USA on my battle net account meaning someone else had played on it, causing a later or now permanent ban. I only want my account unbanned as I am a die hard Call of Duty fan who wants to keep playing.

Please solve this as I am innocent and I am down and able to prove any sort of proof, from computer check to log checks,