its not manners its an opinion
manners is please and thank you, basically
as from google;
The blog then lists basic examples of good manners, including the following:
Be thoughtful.
Be cheerful.
Be generous.
Be cooperative.
Be helpful.
Don't be bossy.
Don't put people down or say rude things.
Respect other's privacy.
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now im my case, it is an opinion. i would be using manners if i were to say sorry, but please leave, is that what you wanted? i can simply resay it to please you.
it was opinionated. not manner related.