There is no rule against using the kill command as long as no other rules are broken. And as the previous post states if you needed help and someone wasn't responding submit a report using the F1 system. I'm going to deny this as there is no proof of the user using the kill command in a malicious way. If a user is using it to gain an advantage it isn't intended to give they can be warned but other than that there is no rule to warrant a warning in this case. Even though this is denied I will speak to Saitama about the situation.