Speaking in generalities here. If you (general you) don't want someone to continue to reply to you, you'd probably have better luck if you didn't attack their character in your request. Just say'n. I imagine you'd have better luck with:
"I've put you on ignore, please don't continue to quote me"
than
"I thought you were more moral than you are, don't reply back."
I have to admit, it seems odd to me that if the person you attacked replies back, you're the one who says you're harassed.
