Peggy it sounds like you have been through quite the ordeal and I certainly feel for you. Please get all your surgical and egd records together and reach out to Dr Ara Keshshian for a review. Dr k specializes in the DS surgery but as I mentioned in another post, if there is a special case where abnormal things are going on with the gut he will give that person the best possible chance at fix for that intestinal dilemma. Reach out to him at dssurgery.com where you will find the email and phone contact information, and explain your case and ask for him to review your records. He is in glendale, CA but don't let that get in the way. If you talk to them and he agrees to look at your records you can send them and he can piece things together to figure out what is going on that is causing your issues.
Dr K in my opinion is the best outside the box thinker, diagnostician and surgeon in the world when it comes to bariatric surgery. He has completed over 2,000 DS procedures with over 500 of those being very complicated revision surgeries. He did a non weight loss surgery on my son to fix his severe gastroparesis with a pretty simple solution that saved his stomach. Another surgeon wanted to completely remove 90% of his stomach.... Dr k is the best person to review your case and records to see if a solution can be found.
I will be frank in that if you had 3 revisions and don't know exactly what was done, you have a potentially very flupped up GI system and you need a person of Dr K's ability to look at your system to diagnose what exactly is happening to cause your issues and hopefully he can propose a fix. If there is a solution he will identify it for you.