Deleting multiple text and voice channels

I have a friend who has his own server and this one dude with admin started making multiple copies of the bot command channel, so many and it turns out the only way to delete them is manually, 1 by 1. There are now over 100 text channels that are waiting to be deleted and it seems impossible to do that all by hand. Hopefully there will be a feature where u can select multiple channels at once and deleted them, as if you were selecting multiple images to delete in your camera roll. Or maybe give a bot the ability to delete every channel  at once, as of now the only way to get rid of a text channel or voice channel is quite slow and tedious. Any of these features i suggested would significantly speed up the clean up for not only out server, but millions how come across similar problems, its like starting fresh without deleting the whole server.