KMG Prestige Hired me, Fired me, didn't pay me for work done. Mt. Pleasant Michigan

This company hired me for maintenance work, In Michgan that usually includes snow removal. I was willing to do this, but found that the s****.> Since I was only hired Part Time I could not quit my other Part time job on Satuday and Sunday. I had already gone over my 20hrs/wk and was told that the manager would work with me.
Well when I told her I had to work my other job the next day, she fired me on the spot. (yes a snow storm was due)
To make it worse this company only paid me 7.25 hrs and will not even talk to me about what they owe me.
I hope they sleep at night, something tells me they do.........

Bill
West Olive, Michigan
U.S.A.