A New Surgeon

I was supposed to have my surgery on May 16th of this year and the morning I woke up I had a bad chest cold, I called my Dr and explained that I was sick and wanted to reschedule they told me not to worry about the chest cold since i was going to be in the hospital anyway. I was really scared about being put to sleep since I already couldn't breathe. They told me that if I didn't show up that they would not reschedule. So I am back to square one with this. They also will not cancel my preapproval so that I can go to a different Dr. Which means now I have to wait a year until my preapproval expires. Any Ideas????