Permanently banned?

I just finished installing cold war after a year or so of not playing, and started it up like normal going through the shader optimization, I did change my in-game name during this process and it told me to restart so i did and it continued the optimization like normal, and once it finished my screen went black and it said i was Permanently banned for "unauthorized software and manipulation of game data"?? like i just finished installing it?

UPDATE**

I messaged blizzard (Where i bought cod) and they said my account was permanently closed, Idk why i don't have any messages in my gmail from activision either.

What Blizzard said:

"From my understanding, your Call of Duty account got banned and are unsure why it was banned.
While checking into your account and case, I can confirm that the standing of your COD account is permanently closed, however, your battle account standing is fine.
All Call of Duty bans and restrictions are implemented by Activision. Please visit the Activision Support site if you wish to appeal an account action by accessing: activision support"