My coin keeps flopping around and won't get finalized.

So, as I wrote before, I had one coin go to NCS before it could be graded. I would like to say that I've been patiently waiting, NOT! So after two weeks, the status changes. It came back and was scelualed for grading. YEA!! Within one day, it then showed that it was in quality control. It won't take long, now. Today though, I rushed home to check the status and to my surprise, it was back in " shedualed for grading" status. I'm lost, what gives? Is it graded or not? I guess that I'll be waiting to see what comes of it tomorrow.