I am so sorry about your experience with that clown , pardon me, doctor ... I have meta few alike, and, trust me, I hate it when they laugh at my condition.
I have heard the exercises strenghten the esophagus, I plan to do them.
Have u tried to visit: www.heartburn-help.com ? They have a lot of info out there too, u might want to check, specially the boards, and the New Boards.
Friendly, check out the web for the low carb diet, and some guy named Norm Billiard, he has an interesting theory, I just ordered his book, I hope it helps, if it does I will let u know.
Just curious, Are u under a lot of stress or something similar?