irl friends, brothers, sisters, heck even dogs or cats on your account?
Your account, your responsibility. If you claim your friend got on your account to get you banned, then that is completely your own fault for not securing your account.
The reason why we are so harsh about this sort of thing? Because it's piss easy to lie about it. For all we know you did it all yourself and now you are trying to come up with some excuses so we would unban you. Sadly though, that's not how it works.