Hi Ursula,
I was almost exactly in the same boat as you and have recently turned things around and lost 20 more pounds since my fill a month ago - the first in two years. Don't feel bad. My doctor said it takes some folks longer to learn how to use the tool correctly, but the good news is you still have the tool and it can be adjusted to work for you again. I sound like a broken record because I've recommended them so much, but go watch these 4 videos. They totally got me back on track and taught me how to finally use the band correctly. You can, and will turn things around. Good luck!
D.