Sorry to hear this is going on. I hate insurance co's, it is not right to keep you hanging like that, I hope it works out and you can be done on Tuesday. I also hate having a colonoscopy, as an older male I have one every 5 years and I feel your pain, I would rather do about anything besides prep for one. Can't really give you any advise, but I will be pulling for you to have it done on time and have the results be something simple. Sleep well.