Goodwill Industries complaint: Treated unfairly

Hello my is Joshua Hawes, and I’m an employee at goodwill in Columbia, MD 9097 Snowden river pkwy. and I filing this complaint because I m feeling that I’m being mistreated. I work a whole other full time job and I’ve had several conversation about certain days that I’m off and nothing seems to change. I’m a very well mannered person and I’m also feeling that I’m being taken advantage of because I look at my fellow cashiers schedules as well as mine and I see that they get 2 Sundays back to back off whereas for me I only get 1 Sunday( keep in mind that she told me no one can get to Sundays off in a row), now I know that don’t seem like a complaint but this happens very often. Recently earlier this month I requested a few days off, and I was denied!!! I’d turned in another time request off and I haven’t seen it since and it wasn’t returned to me and I turned this in about 2 weeks ago. I get every other weekend off and then every other Thursday off, and all I want is my 2 thursdays, 1 weekend and 1 other Sunday off in a month, this is what I told her that’s all I want. She doesn’t want to listen to me so Please help me, I’ll be every so grateful.