So there is this guy at my store who asks me to hang out with him or go on a date with him almost every time I see him. I've repeatedly told him no, but he continues. It makes me uncomfortable, but I'm pretty sure he does this to other people in the store, including guys as a joke, and I'm pretty sure he's harmless as he has my phone number but has never done any thing with it. It's getting to the point where I try to avoid him, and am feeling like I'm being harassed. I'm considering telling him one more time to leave me alone and that if he doesn't I'll report him to HR. I don't want him to get in trouble, I just want him to stop. Is this a proper course of action?