I'm sorry you are having trouble getting the right pain meds, it sometimes takes awhile and can get very fustrating.
I was on the pain patches for about a year, I was on the Duragesic, one day I went to pick them up and the pharmacy gave me the generic. She said the insurance won't cover the name brand anymore unless there is a problem.
I used one generic patch and could tell the difference right away, it didn't stick and made my arm swell up. Also I was getting no pain relief.
My doctor had to fill out a special form for me to take the name brand. When I went back to the name brand(duragesic) it was much better. I am not on the patch now but am using the liquid form for break thru with my oxy and so far so good.