are you serious?! i just read it too.... thats damn near minimum wage.... for what you were doing thats slavery... but i wouldn't really blame the employer lol its common sense if you're getting 7.50 an hour and a month later you're still doing what you're doing and making the same amount... leave, regardless of what the arrangements for the future were...
I wasn't happy with 7.50/hr when I was 15 working at just for feet (before it closed down). I have no idea how you stuck in there for so many months. Or what was promised to you was that worthwhile.