The only misrepresentation I've experienced is the promise of bonuses or raises that never quite measure up to what you expect. Although some of that is hearing what you want to hear and developing overly optimistic expectations.
Not true with my current position, however, they've been very good to me.
If you're not doing what you want to do, or was led to believe you'd be doing,
you should go see your boss. Many times bosses don't know you have any initiative, unless you express your thoughts. Don't accuse them of lying or be antagonistic, that will get you nothing. Be realistic with your expectations, but don't be afraid to dream big either. I've gone to both people I've answered to and told them what I want to do technically, where I'd like to be, both short term and long term, and I've gotten positive results and opportunities to pursue some new skills with the company paying for it!
Not every place is that open or willing. Give your place a fair chance and if they don't deliver then look for greener pastures, I've done that before too.
