I'm working in a supermarket as a "checkout chick" - yes, crap really but I wanted to get into retail and this is where I've wound up

I've been doing more of the scanning/tickets/pricing stuff of late though which is what I want to get into.
But it's just become even worse now. I was meant to go in today to actually do the scanning stuff but was told I wasn't needed as often, that they'll only need me to do it once a month, so I'm not required to go in. I'm not happy about this at all since that means I've only worked one shift this week. It's lucky I have savings and still live at home otherwise I'd be completely broke *sigh*
I think though, if I sign up to do the retail course they run through the company, I could be put onto part-time, so I'm going to do that and see what happens. Hopefully that'll make a difference, because if I'm on part-time I have to work a set number of hours which means they won't be able to cut me back or call me in at the last minute.
It's just frustrating though really, since I'm one of the higher paid people who works there. Whenever it's the school holidays we always get cut back for the younger school kids, because obviously they're not paid as much so they don't have to worry about their stupid "budget" being blown. But I figure if they put me up to part-time they wouldn't have to pay me as much so it'd probably work out a bit better for them to give me more shifts (over here the pay-rate for casual is higher than part-time, but as a casual we don't get benefits like leave with pay, etc...)
So yeah... that's basically my current situation.