I have been working at this tuition center for about 2 years now. I am a decent worker who is never late and I always finish my assigned tasks. There is a rule that was implemented from the start of my employment that says no phone usage during work. I usually abide by this rule.
There are other employees in the center and when its a slow day, they will use their phones to play games or text. However, when I start using my phone, my supervisor calls out my name and tells me to not use my phone. I find this rather uncalled for, since everyone else is using their phone.
I have talked to my supervisor about this matter and she tells me that she isn't just doing this to me; sometimes this gets humiliating.
So what do I do in these types of situations?