This wouldn’t be a good option in your case or anyone’s to be honest.
If you want to automate a ban using a bot, the ban should be instant.
Banning more than one user at the same time would require you to already have a list of users you want to ban and to gather a list in real time would mean that the message of each user would stay in chat for a longer period of time since you’re gathering a list of users to ban up to a limit of your choosing.