Account banned due to multiple kills of AFK bots

I've read the article about account banning many times, even downloaded my EA game profile and checked my STEAM login address, I'm pretty sure I was banned for killing most of the AFK bots, and when I filed a complaint for this reason, no one accepted it for me, I don't understand. Don't you know that this is happening on Hong Kong servers? There are a lot of AFK bots messing up the game environment. Just because I killed too many AFK bots, my account was banned. I don't understand.