This is all sounding very familiar!
I had discomfort, really bad heartburn and vomiting for over a year. The pain got so severe one day I was rushed to hospital in an ambulance, and a few hours later had my gallbladder removed. I had a few gallstones. I felt great immediately afterwards, and the heartburn which plagued my every day, was gone! However.... 2 weeks later, the previous discomfort started to return. I assumed it was just healing. After the pain spread round to my back, and i was having problems eating, I had a barium swallow, and it was clear something was wrong with the band. The camera swallow (gastroscopy) confirmed, I had quite severe band erosion. The band was visible on the inside of my stomach.
I had to have the band removed a few days later.
Prior to this all happening, I never had any problems with the band. It was an excellent tool to weight loss. I miss it!
I am considering options for revision. (Sleeve v's Bypass)