You sound exactly like me, I lived like that for 30 years or more, I remember panicking anytime I had to go anywhere, the only place I felt safe was at home, but then I was depressed. Xanax and such did help and allow me to function to a degree, but the fear never leaves. The anxiety of having an attack is always there.
About 2 years ago a Doc had me try cymbalta because I had been on xanax too long. The change was subtle, but within a month I was a different person. I can go anywhere, do anything, and I don't even think about having an attack. H-ll I can even go to baseball games now. I'm not saying specifically that cymbalta will work for You. But I lead a very normal life now, doing things I never thought possible a few short years ago.
I tried the CBT also but the fear of not having xanax or whatever was too overwhelming for me. It is good therapy for some but isn't the answer for all of us. Feel free to contact me with any questions or help You might need. I know your pain Pal but it can be easily overcome.