DaVita interview questions

I had always wanted to work for Davita. I've applied there three times in the past four years. Once, I got an in person interview, but didn't get the job. I have no dialysis experience. Last week, I applied for a Staff RN position and did a phone interview-only to be told at the conclusion of the interview that the position I applied for was no longer available! The recruiter then told me that there was a similar position at another center not far from the one which I had applied and asked if I'd like to be considered for that one. I agreed to apply for that position, only to check out the website moments later to learn that the other position to which she was referring was a Charge position. Again, I have no dialysis experience, so I emailed the recruiter asking if there was a staff RN position at that location not posted yet. I received no response until today, stating that I was not chosen for the CHARGE POSITION to which I had applied. What a joke!