How Can severe Back Pain Be Treated?

Hi,
I have being suffering for eleven years with chronic back pain (2006). I have had 2 mri scans and an xray which showed 2 discs with buldges, L4 L5 & L5 S1. stenosis at these levels also. I attended 2 GPs, a physiotherapist, an orthopaedic surgeon, a neurosurgeon and just yesterday a new physiotherapist. He manipulated my hips in which he said were severely out of line as well as my entire back and neck. Which profession should have/could have diagnosed this instead of me suffering for 11 years. I am only 29 and have spent this whole time in agony. He fixed me in 20 minutes, I could cry, who is to blame, I was 18 and paid to see all of these people myself? He said they had been out for a very long time.