How can ktv complain without security personnel?

You can complain directly to the local public security department.

Because according to the current regulations, all security guards involved in public places need to be approved by the local public security department. Therefore, ktv has no security personnel who can directly complain to the local public security department.

The full name of KTV is KaraokeTV. Karaok is a Japanese-English hybrid, and Kara means empty in Japanese.