Dead-End Job with no promotion ability, may just be my field - Patient Advocate Myriad Genetics Employee Review

I was told upon being hired that I could move up/move to the Marketing Department after 9 months if they happened to be hiring in Marketing at that time. I took this job basically right out of college with little real world experience, but needed the money, so I shot my chances of getting Marketing experience with the hopes I could transfer after 9 months. 2 years later, HR offers no real help other than to "keep checking the job postings" and does not hire Marketing employees from within. They hire Marketing people with experience. I basically need to start over so I can get on a career path that doesn't limit me to $35 K a year and is actually in the field I want to go into.