Do you hate it when people are being rude to you for no reason? Is there a way to deal with it?

I don't know if I'm being too sensitive. I know they are probably frustrated due to whatever is happening in their lives or they have some problems they can't deal with...but do they really have to be rude towards strangers? Why should someone else have to tolerate that? I'm just minding my business but it feels like whenever I make the slightest mistake in life (holding the line for 15 seconds longer or asking questions that aren't stated in the site etc.) I almost always run into a clearly-angry-person that has to roll their eyes, curse, yell, be passive-aggressive, be active aggressive...
And whenever I'm upset, my stomach hurts 😅 so not only do I have to be around such people, they literally hurt me. Is there a way to deal with them? I don't want to be rude to them, put them down or whatever, I just wish they weren't rude to me and would mind their own business/do their job.