Don't apologise. Who wouldn't be fed up in your situation. Happened to me for a year because I was totally on the wrong meds and my old pdoc refused to work with me and kept shoving the same meds in my face when it clearly wasn't working. Yes, I felt completely hopeless when this went on and I eventually thought I'd never get better.

Well I'm with a new pdoc now who listens to me and I've had a revamp of meds. I'm okay for now. Not perfect. But ok.

Be well and know that things can change.