I wrote a letter to bring someone closer to a state of mindful, respectful behavior, but the person chose not to read it. What should happen next?

As stated in the main question, the person chose not to read it... and the letter ends stating that if the person doesn't accept the olive branch I will walk away and don't want the person in my life. After months of time and space the person claimed to want a connection of some sort, but (1) without reading the letter or (2) accepting the request to be more mindful.

I'm sticking to my guns and walking away, however I'd like to know what y'all think... I don't know why the person would want to keep bugging me to maintain some sort of connection when clearly we're not morally on the same page.

Block, delete and walk away.
Give the person a second chance.
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Thanks for your answers, everyone! You've made it super challenging to declare the MHOs!

I'm blocking this guy, because it's true... the letter WAS the olive branch/second chance. He chose to discard it very irreverently, which shows a lack of respect for my time/feelings as well as his inability to commit to being mindful, which was all I asked of him. He's just a fake, toxic sort of person.

Thankfully, a two of our shared acquaintances agreed to help keep him at bay. Blessed to have them.
I wrote a letter to bring someone closer to a state of mindful, respectful behavior, but the person chose not to read it. What should happen next?
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