HHow do you deal when people are acting rather regular but you sense hostility beneath their surface?

I was shopping at a thrift store and this is the second time here where im just looking at stuff in the mirror and this plder guy worker comes up and tells me when im done i need to put everything on a certain rack somewhere else in the store.

This second time it happened i was already doing that. Once he came up to me i just stopped doing it. I left the store. Pretty sure he saw me do it. So he knows where the clothes are and can grab them himself.

HHow do you deal when people are acting rather regular but you sense hostility beneath their surface?
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