DON lied.

So here's a question. Started a new job at an LTC/Skilled facility 3 weeks ago. I was hired as the Unit Manager of the Skilled Unit. I'm a new nurse (worked 5 months at a hospital on the skilled floor). Now, my common sense told me you don't hire a new nurse with 5 months experience as a Unit Manager, but they promised extensive training, so I figured what the heck. Hours were to be 10-6 M-F and on call every other weekend. Last day of my 2 week floor orientation and I go to the DON and ask about my schedule for the next week. She says M-F 7a -3p. I ask when the 10-6 starts. She says "It doesn't, where did you get that". I said you told me that in the interview. She said " I never said that". I was absolutely floored. I wouldn't have taken a 7a-3p shift. I don't do mornings, never have. Went to HR and explained what had happened and also explained that I have absolutely no clue what my job entails because I had only been trained to pass meds and do skin treatments etc. Also the supposed "Skilled Facility" is just an extension of the LTC that they call Skilled. I turned down another job on a skilled floor of a hospital to take this job because I thought the smaller, closer atmosphere would suit me better. I also found out the person they hired before me (a more experienced nurse) lasted 1 day and actually told the DON "Oh hell no" on her way out the door. Advice? Thoughts?