Do any of these sound disrespectful if wrapping up or reconciling a conversation?

"End of discussion." [especially a desperate way to end an argument or conversation] "Case closed." [ex: after whoever says it is confirming that she now knows something] "I do not want to hear a story." [ex: after his conversation partner gives him a logical explanation when he asks... show more "End of discussion." [especially a desperate way to end an argument or conversation]

"Case closed." [ex: after whoever says it is confirming that she now knows something]

"I do not want to hear a story." [ex: after his conversation partner gives him a logical explanation when he asks her why they were discussing a particular topic]

Do any of these sound snotty when putting something to bed?
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