I'm sorry about what you've gone through, but it really isn't right to post that it doesn't work. For so many people it does. There is no guarantee with any surgery that you won't gain your weight back, including with DS. You can outeat any surgery, and there are possible complications with any of them, even life-threatening complications. However, people can and do die every day from complications associated with morbid obesity (stroke, heart attack, etc.), so that's not the answer either.
I'm so sorry you had this terrible complication. It does sound as if part of your issue was poor medical care in that your complication was misdiagnosed for such a long period and your physicians weren't competent to diagnose what was wrong. That doesn't necessarily happen to everyone. I'm confused though. If you had scar tissue blocking all food going through, how did you gain 100 pounds?
Also, you had surgery 6 years ago - and this is your only post?