Should I call HR or her boss?

Hello, I just want to know if I should call HR or my SMs boss. I posted a few days ago about how she was treating me when a loved one passed away and how she is asking for proof. I found out yesterday that the person she has over there is from another store, that my SM told him that she’s giving him all my hours because she’s trying to get rid of me. So she cut my hours out of retaliation. It was definitely a targeted thing. So I feel like this is enough evidence on top of everything since I’ve been working at Sally’s and then the treatment recently. I also have a question what’s the hotline in Arizona? We don’t have it. Thank you for your time.