Do you have a sleep doctor? If so, get him/her to go ahead with a new sleep study without getting the Bariatric surgeon to refer you. If you do not, tell your PCP that you need a new sleep study since it has been more than two years. In other words, do not wait for your denial, do not wait for cooperation from the surgeon's staff. They do not have a vested interest in getting this done. You do. And if you need the name of a sleep doc, let me know. Hubby had a great one while we lived there in Knoxville.