Revision Pending and very scared !!!!!

I had a gastic bypass on March 01... I am now going for a revision and really scared July 28. The statitics scare me. I did get a new Doctor who does revisions but I am still scared.. I have to have scar tissue removed and then the revision. My new doctors office had the revision approved from my insurance but has not put in for the new surgery. They are asking for a large payment. I said no can do.. As anyone had that happen.