Retail akward customer?

Hello All, I have been working at my retail job for just over a year. During that time I have never had any issues with any customers except one. For some reason every time he drops into the store he gives me a hard time. Sometimes he just gives me an aggresive stare other times he makes snide remarks or... show more Hello All, I have been working at my retail job for just over a year. During that time I have never had any issues with any customers except one.

For some reason every time he drops into the store he gives me a hard time.

Sometimes he just gives me an aggresive stare other times he makes snide remarks or threatening me by saying you better not look at me again and stuff like that.

My question is firstly how should I deal with this? Because I just dread serving him again. And secondly, is this something I should tell the manage?r Or do I just leave it alone and except its part of my job that your going to meet difficult people.
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