"Harassment and misogyny don’t belong on Bumble - and therefore neither do you."

That’s what Austin-based dating app Bumble said after banning a user who had reportedly criticized another user for her appearance. 

On Thursday, Bumble published "An Open Letter to Michael," writing to the now-banned user. According to the letter, Michael offered "advice on self-development" and encouraged the user to put effort into "looking tip top" so the two could spend time together.

"Who taught you how to talk like that? Do you think that the ‘security’ of hiding behind a screen gives you permission to degrade people you don't know? Maybe you didn't know, but we hold people accountable for their actions. We care tremendously about our community and our users' well being," the letter reads.

According to the letter, Michael claimed his friends "hijacked" his account. 

"Here's a tip: It’s the 21st century. Small minded, sexist, shallow people aren’t welcome in a progressive society anymore, and in the end, only you will lose out. Times are changing, women are speaking up for themselves, and people are no longer going to be getting away with this sort of behavior. Things are getting better, our world is working toward harmony, and you will miss out on all of the incredible beauty equality has to offer," the letter reads.

Don't say something online that you wouldn't say offline. Harass people and we'll ban you for life. https://t.co/qemnPUhjsj #LaterMichael #LaterConnor

— Bumble (@bumble_app) December 15, 2017