Thoughts.com Blogs - What to do?

Work is crap! My boss is treating me like shit! I don't want to go into terrible detail, but let's just say I'm looking into a transfer of departments.

Saturday, Bruce (store director) offered me a position in the deli working the cheese wall. It's a 5am-1:30pm job, so I have nights free and still be full-time. I initially turned it down, but I am now looking into taking the job. First of all, it will only better me learning something new. Second, it'll help me should I ever want to advance in the company. Being stuck in the gas station, the managers who matter can't observe my work ethic or anything. But in the store, I can be watched/observed daily. It would only better myself and help me to take this job.

Now what really pushed me into taking this job was Josh (my manager). He is on 3rd today, but had to come in for a meeting; so he came into the gas station it was brought up that I should be put on more 2nd shifts in order to ensure the work is getting done. I told him that would be fine as long as I had Tuesday nights off for softball. He told me I couldn't because being full time,I have to have open availability, and I couldn't have a set schedule. Well let's look at this from my POV:

-Mike is full-time, but when April didn't have a car, Josh worked with his schedule so that they could carpool in together.
-When Kathy was still at the store and full-time, Josh worked with her schedule so that she was all days so that she could come in as soon as she dropped her daughter at school. It wasn't until higher management intervened that he scheduled her other shifts.
-Kelly is full-time, yet he's on a set schedule of 3rd shift.

He's worked with all three of their schedules to accomodate them, why not me? After all I've done for that store? It makes me so mad. I actually show up on time; I do my specific job; I go above and beyond to make sure things are done and no one has to double up because of me.

I don't know? Is my anger justified- or am I blowing it out of proportion?