Might not be for hacking. If it's a 7 day suspension it could be something like cursing, harassment, etc. Even though my last suspension for something like that was 30 days. I guess it depends on the GM who initiates it.
I've never been suspended on any account. Noob, legit, hacking or anything. or banned. Once you kill someone if they didn't see u or if u headshot them on first shot they call u a hacker even if ur legit. AND I CURSE EVERY GAME FOR FUN. using that funny ctrl backspace technique.