Edmonton Bariatric Revision Clinic....has anyone been denied surgery?

Hi, I am in the process of going through the steps to have a revision from VBG to Bypass through the Edmonton Bariatric Revision clinic and am wondering if anyone has been denied and if so, what was the reason.  I am so scared of being denied the surgery.  Also, for those that have had a revision, how long did it take from first contact to surgery date?  Seems to be quite a long process.

Thanks for any and all your help

Dawn