Walked into work today ready to talk to my boss about my hours. First thing he does is call me into…

Walked into work today ready to talk to my boss about my hours. First thing he does is call me into the office and ask me about my availability and then tells me he hasn't given me all my hours back yet one because of corona and two because he wants me to be a shift manager. Thats why he hired the other girls so he has someone to fill my position. I don't really wanna work evenings but this will come with a decent raise so i may go through with it.